96158E CC-Link Compatible Network Unit DL-CL1 User’s Manual (FD-S) Read this manual before using the product in order to achieve maximum performance. Keep this manual in a safe place for future reference.
Introduction This manual describes the basic operations and hardware functions of the DL-CL1. Read the manual carefully to ensure safe performance and function of the DL-CL1. Keep this manual in a safe place for future reference. Ensure that the end user of this product receives this manual. Symbols The following symbols alert you to matters concerning the prevention of injury and product damage. DANGER It indicates a hazardous situation which, if not avoided, will result in death or serious injury.
Safety Precautions General Precautions • Before and while operating this product, confirm that it provides its functions and performance correctly. • Implement sufficient safety measures to prevent human and physical damages in case this product fails. • Be aware that the product functions and performance are not warranted if the product is used outside the range of stated specifications or is modified by the customer.
Equipment Environment For safe, trouble-free operation of this product, the product must not be installed on the following locations: • • • • • • Humid, dusty, or ill-ventilated. Exposed to direct sunlight or heating source. Exposed to corrosive or flammable gases. Exposed directly to vibration or shock. Exposed to water, oil, or chemical splashes. Exposed to static electricity. Noise Protection If this product is installed on a location near a noise source, e.g.
CE Marking Keyence Corporation has confirmed that this product complies with the essential requirements of the applicable EC Directive, based on the following specifications. Be sure to consider the following specifications when using this product in the Member State of European Union. ■ EMC Directive EMI : EN55011, Class A EMS : EN61000-6-2 • Install this product in a conductive enclosure. (e.g.
Relevant Manuals The manuals to relevant to this document are as follows: Manuals relevant to CPU unit Example: KV-5000 user's manual PLC CPU unit CC-Link master unit Manuals relevant to CC-Link master unit Example: KV-CL20 user's manual DL-CL1 (This unit) This manual Manuals of sensor amplifier main unit Sensor amplifier Example: ・FD-S series instruction manual 4 - CC-Link Compatible Network Unit DL-CL1 User’s Manual (FD-S) -
Manual Organization 1 Before Using This chapter provides an overview of the DL-CL1 and describes its part names and functions. 2 Connection and Configuration This chapter explains the procedures for connecting sensor amplifiers to the DL-CL1 and how to configure the data link. 3 Communicating with the FD-S series This chapter describes the configuration of the memory linked to the CC-Link master station and provides communication time charts.
Table of Contents Safety Precautions.............................................................................1 General Precautions .......................................................................... 1 Precautions for Use ........................................................................... 1 Notes on Regulations and Standards ................................................ 2 Relevant Manuals...............................................................................
Table of Contents 3-4 Entering an External Input into a Sensor Amplifier ....................... 3-17 Reading Current Values (Instantaneous Flow Rate) from Sensor Amplifiers.................................................................. 3-18 Issuing a Motion Command to a Sensor Amplifier........................ 3-20 Rewriting a Setting Value of a Sensor Amplifier ........................... 3-21 Reading/Writing Settings or Status of a Sensor Amplifier ............ 3-21 Command Parameter List ..........
Terms Used in This Document This document uses the following terms: Term Description Sensor Main unit A sensor amplifier. A sensor amplifier that has a power line and can operate alone. A sensor amplifier that does not have a power line and must be Expansion unit connected to a main unit. The name of KEYENCE's wiring-saving system for sensor amplifiD-bus ers. Supports FD-S Series colioris type digital flow sensors and others.
Before Using This chapter provides an overview of the DL-CL1 and describes its part names and functions. 1-1 1-2 1-3 1 DL-CL1 Overview ............................................... 1-2 Checking the Package Contents ........................ 1-3 Names and Functions of Each Part....................
1-1 1 DL-CL1 Overview Overview Before Using This unit operates as a remote device station (Ver. 1.1 and 2 switchable) of a CC-Link system. Using CC-Link communications, the sensor amplifiers and other units connected to the DL-CL1 can transmit their ON/OFF control signals and current values as communication data to PLC or other equipment. The DL-CL1 supports cyclic transfer and extended cyclic transfer, enabling data communication without the need of a ladder program.
1-2 Checking the Package Contents Before using the DL-CL1, make sure that the following equipment and accessories are included in the package. We have thoroughly inspected the package contents before shipment. However, in the event of defective or broken items, contact your nearest KEYENCE office.
1-3 Names and Functions of Each Part This section describes the part names and functions of the DL-CL1. 1 (1) Transmission rate setting switch (2) Station number setting switch (4) Power indicator (green) (5) Communication indicator (green) (6) Communication error indicator (red) 15JN IND.CONT.EQ.
1-3 Names and Functions of Each Part Name (3) Operating mode setting switch Switch setting Others (4) Power indicator (5) Communication indicator (6) Communication error indicator (7) Sensor communication indicator (8) CC-Link connector DA/DB/DG SLD FG (9) Sensor amplifier connector (for DIN rail mounting) (10)Sensor amplifier connector (for panel mounting/large display)* Number of link points Operating mode Station configuration RX/RY RWw/RWr Small-memory mode 1 (1-output, 1-input) 1-station, 1x
1-3 Names and Functions of Each Part MEMO 1 Before Using 1-6 - CC-Link Compatible Network Unit DL-CL1 User’s Manual (FD-S) -
Connection and Configuration This chapter explains the procedures for connecting sensor amplifiers to the DL-CL1 and how to configure the data link. 2-1 2-2 2-3 2 Installation and Connection to Sensor Amplifiers ........................................................................... 2-2 Wiring ................................................................. 2-6 Configuring the Data Link.................................
2-1 Installation and Connection to Sensor Amplifiers This section provides the procedures for installing the DL-CL1 and connecting to sensor amplifiers. 2 The DL-CL1 can be connected with the expansion units of sensor amplifiers which support D-bus. ("D-bus" is the name of KEYENCE's wiring-saving system for sensor amplifiers.) How many sensor amplifiers can be connected depends on the sensor amplifiers or units to be connected.
2-1 Installation and Connection to Sensor Amplifiers Installation and Connection to Sensor Amplifiers Mounting on a DIN rail 1 Align the claw on the bottom of the amplifier with the DIN rail. While pushing the amplifier in the direction of arrow (1), press down in the direction of arrow (2). (2) (1) 2 To remove the DL-CL1, raise the main unit in the direction of arrow (3) while pushing it the direction of arrow (1).
2-1 Installation and Connection to Sensor Amplifiers Procedures for connecting to sensor amplifiers The CC-Link compatible communication unit DL-CL1 must be connected to sensor amplifiers before it can provide its function. NOTICE 2 Connection and Configuration Point 1 Make sure that the power to the sensor amplifier is off before starting to connect the CC-Link compatible communication unit DL-CL1. Performing the procedure with the power on may damage the DL-CL1.
2-1 Installation and Connection to Sensor Amplifiers Make sure that the sensor amplifier connector (for DIN rail mounting type) is not askew on the side face of the CC-Link compatible communication unit DL-CL1, as shown below. If the connector is askew, the DLCL1 may become damaged when connected to the sensor amplifier.
2-2 Wiring This section describes how to wire the DL-CL1. Point 2 • Turn off the power before starting the cabling operation. • For more information about the CC-Link system, including cable length and cabling methods, refer to the document of the CC-Link master unit. Connection and Configuration Connecting to the CC-Link System Use the following procedures to connect the DL-CL1 to the CC-Link system. Usable cables For connection between the DL-CL1 and the CC-Link system, use CC-Link cables (Ver. 1.
2-2 Wiring 2 Trim the shield. Upbraid the shield braid carefully. Find the bare drain wire (twisted or flying) inside the shield braid. Twist together the unbranded shield braid and the drain wire securely, and then put on the insulating tube. Aluminum polyester laminated tape Strip the sheathed conductors. Strip approximately 10 mm of sheath from each signal wire, by removing the aluminum polyester laminated tape. Take care not to damage the signal wires. Twist together the exposed conductors securely.
2-2 Wiring Connecting the cable Use the following procedures to connect to the CC-Link connector supplied with the DL-CL1. 2 1 Connect the trimmed cable to the CC-Link connector. Insert the cable completely. Connection and Configuration Terminal name 2 Function DA/DB/DG Communication signal SLD Connect the shielded wire of the CC-Link cable. FG Ground this functional ground terminal. (Ground resistance: 100 ohm or less) Attach the CC-Link connector to the DL-CL1.
2-2 Wiring Connecting the termination resistor If the DL-CL1 is at the end of the CC-Link system, connect the supplied termination resistor to DA/DB of the CC-Link connector. Type of cable Termination resistor CC-Link Ver. 1.
2-3 Configuring the Data Link Use the following configuration procedures for connecting the DL-CL1 to the CC-Link system. Point 2 Connection and Configuration This manual covers only the functions and settings of a CC-Link master station which are required for communication with the DL-CL1. For the functions and settings related to the communication between the CC-Link master unit and CPU unit, refer to the manuals shipped with your master unit or CPU unit.
2-3 Configuring the Data Link Setting the transmission rate Set the transmission rate of the DL-CL1 to the same value as set in the CC-Link master station. Do this using the transmission rate setting switch on the DL-CL1. • Default value: 0 No. Transmission rate (bps) 0 1 2 3 4 5 to 9 156 k 625 k 2.5 M 5M 10 M Cannot be set.
2-3 Configuring the Data Link Point Each switch should be set before turning on the power. If any setting is changed while the DL-CL1 is operating, the new setting will not be applied until the power is turned on again. (The communication error indicator flashes intermittently.
Communicating with the FD-S series This chapter describes the configuration of the memory linked to the CC-Link master station and provides communication time charts. 3-1 3-2 3-3 3-4 3 CC-Link Communication and Operating Modes . 3-2 Device Maps....................................................... 3-4 Communication Methods.................................. 3-17 Command Parameter List.................................
3-1 CC-Link Communication and Operating Modes The DL-CL1 operates as a remote device station of a CC-Link system. This section describes the data that the DL-CL1 can exchange through the CC-Link, and available operating modes. Data Exchanged by Cyclic Transfer The DL-CL1's data is linked with the CC-Link maser station as shown below.
3-1 CC-Link Communication and Operating Modes Selecting an Operating Mode of the DL-CL1 Select an operating mode of the DL-CL1 to suit the functions of the sensor amplifiers to be used. The specific CC-Link device configuration and the data that can be communicated using cyclic transfer vary with each operating mode of the DL-CL1. An appropriate operating mode should be determined by considering the number of link points the data that can be communicated.
3-2 Device Maps The device maps vary as described in "Selecting an Operating Mode of the DLCL1" (page 3-3). Select an operating mode suited for the functions of the sensor amplifiers to be used, before accessing each device. Device Maps for Small-Memory Mode 1, Small-Memory Mode 2, and Monitor Mode 1 The following device maps are used for when the operating mode is small-memory mode 1, small-memory mode 2, or monitor mode 1.
3-2 Device Maps Operating Device no. mode (HEX) Name Communication method Monitor mode1 Current RX[n] + 53 Value Update Locked Reading range - 0: Update This is output when current value update is locked (current value update lock request (RY[n] enabled 1: Update + 53) is enabled). locked - Unusable *2 Used for reading the current value.This is output 0->1: Change when the current value page has been changed. complete *2 Used for reading the current value.
3-2 Device Maps Monitor mode1 Operating Device no. Communication Name Description Writing range mode (HEX) method RY[n] + 40 (Not used) to 43 RY[n] + 4F System reserved Unusable to 50 Used when communicating under handshake control program. 0->1: Request RY[n] + 51 Request for *3 command This is input when requesting command execution execution.
3-2 Device Maps Operating Device no.
3-2 Device Maps Error information list Error Information (HEX)* 0000 3 Description Cause Corrective action Communicating with the FD-S series No error - - 0001 0002 0005 Initialization error Error encountered during initialization. Check the number of connected sensor amplifiers and the connection to the sensor amplifiers, and then cycle power. If the error remain, contact your nearest sales office.
3-2 Device Maps Response (HEX) Name Description 000C Operating status error Command communication (reading) is temporarily prohibited because of the operating status of the sensor amplifier. 000D Write error/Operating status error This data number cannot be written. Data written is out of write range. Command communication is temporarily prohibited because of the operating status of the sensor amplifier. FFFF(-1) The command has been processed successfully.
3-2 Device Maps Number [n] denotes the first data memory number assigned to the DL-CL1. *1 See "Reading Current Values (Instantaneous Flow Rate) from Sensor Amplifiers" (page 3-18). *2 See "Reading/Writing Settings or Status of a Sensor Amplifier" (page 3-21). See "Issuing a Motion Command to a Sensor Amplifier" (page 3-20). See "Command Parameter List" (page 3-24).
3-2 Device Maps Full mode2 Full mode1 Monitor mode2 Operating Device no. Name mode (HEX) RX[n] + 40 (Not used) to 49 RX[n] + 4F System reserved Communication method -- - Unusable Used when communicating under handshake control program. This is output when command execution is ready. Used when communicating under handshake control program. This is output when command execution is complete. Used when communicating under handshake control program.
3-2 Device Maps Operating Device no. mode (HEX) Full mode2 Full mode1 Monitor mode2 RX[n] + AF RX[n] + B0 to B3 RX[n] + BF 3 Communicating with the FD-S series RX[n] + C0 to EF RX[n] + 7B RX[n] + DB Name Temperature lower limit rewrite error Integrated flow quantity setting-1 rewrite complete ID 01 to ID 04 Integrated flow quantity setting-1 rewrite error System reserved Communication method Description *3 *3 *3 Remote ready Reading range Used when rewriting a setting value.
3-2 Device Maps Operating Device no. mode (HEX) Name Full mode2 Full mode1 Monitor mode2 Value RY[n] + 53 Current Update Request RY[n] + 54 System reserved to 5F RY[n] + 60 (Not used) to 63 RY[n] + 6F (Not used) Communication method Description Writing range - Used when locking data update of current value. This may be used to obtain the current values of multiple sensor amplifiers at the same timing. The current value is locked while the update request is held.
3-2 Device Maps Number [n] denotes the first relay number assigned to the DL-CL1. *1 See "Entering an External Input into a Sensor Amplifier" (page 3-17). *2 See "Reading/Writing Settings or Status of a Sensor Amplifier" (page 3-21). See "Issuing a Motion Command to a Sensor Amplifier" (page 3-20). See "Rewriting a Setting Value of a Sensor Amplifier" (page 3-21).
3-2 Device Maps Operating Device no. (HEX) mode Full mode2 Full mode1 Monitor mode2 RWr[n] +12 to 13 (INT32) Current Value ID04 Communication method *3 Description Reading range Used for reading the instantaneous flow rate value. INT32 (LITTLE) Outputs the instantaneous flow rate value of the sensor amplifier (ID 04).
3-2 Device Maps Remote Register RWw (Master Station -> DL-CL1) Operating Device no.
3-3 Communication Methods This section describes how the CC-Link master station communicates with the DLCL1.
3-3 Communication Methods Reading Current Values (Instantaneous Flow Rate) from Sensor Amplifiers Current values can be read in the monitor modes and full modes. They cannot be read in small-memory modes. Instantaneous flow rate is read as the current value regardless of the detection mode setting. 3 Monitor mode 1 When reading current values in monitor mode 1, specify the ID numbers (in terms of current value page numbers) of the sensor amplifiers to be read to current value boxes 1 to 3.
3-3 Communication Methods (5) The current values of the sensor amplifiers of the specified ID numbers are entered into current value boxes 1 to 3. If the current value is over range, under range, or invalid, the previous value is retained without updating the current value. Use the value with the judgment value property. (6) When the "request to change current value page" command is set to 0, the "current value page change complete" parameter flips to 0.
3-3 Communication Methods Issuing a Motion Command to a Sensor Amplifier Available motion commands: See "Motion command parameters" (page 3-25). Commands can be used to reset preset values, clear errors, or for other purposes.
3-3 Communication Methods Rewriting a Setting Value of a Sensor Amplifier Available setting values: Instantaneous flow rate setting 1 (P1), instantaneous flow rate setting 2 (P2), temperature upper limit setting, temperature lower limit setting, and integrated flow quantity setting 1 Reference When rewriting any settings other than listed above, use the procedure described in (page 3-21).
3-3 Communication Methods Reading settings or status PLC Data category/command number RWw00 (2) 0000h (Read command) (3) Data number RWw01 Sensor ready RX50 Command request RY51 3 Command finish RX51 Command error RX52 0141h (1) 1 0 (4) 1 0 (9) (5) 1 0 (6) 1 0 Communicating with the FD-S series (7) Data to read RWr02 1234h (Data that has been read) (8) Command response RWr01 0000h (Successfully completed) Sensor amplifier Parameter 1234h (1) To see that the sensor amplifier is ready to
3-3 Communication Methods Writing settings or status (2) PLC Data category/command number RWw00 0001h (Write command) (3) Data number RWw01 0141h (4) Data to write RWw02 Sensor ready RX50 Command request RY51 Command finish RX51 (9) (5) 1 0 3 (6) 1 0 (7) 1 0 (8) Command response RWr01 Sensor amplifier 0000h (Successfully completed) 1234h Parameter (1) To see that the sensor amplifier is ready to send/receive commands, check that the "sensor ready" parameter is set to 1.
3-4 Command Parameter List The following tables list the command parameters used to read/write the settings and status of sensor amplifiers, or to issue motion commands, by creating a handshake control program.
3-4 Command Parameter List Data Data category number (HEX) (HEX) ··· 0304 0000 0101 0104 ··· 0204 *1 UINT **00 to **FF 0: No decimal point 1: One decimal 2: Two decimals 3: Three decimals 4: Four decimals Reads the decimal point position of ID 04. Reads the number of connected sensor amplifiers. UINT Parameter range 0 1-4 0 4014: FD-SA*A main unit 4015: FD-SA*A expansion unit 4012: FD-SA* main nit 4013: FD-SA* expansion unit R UINT Head code ID 0: 0.
3-4 Command Parameter List For the communication methods using motion command parameters, see "Issuing a Motion Command to a Sensor Amplifier" (page 3-20). Attribute R: Read; C: Motion command nn: ID number of sensor amplifier. Example: For nn05h and ID13, then 0D05h.
3-4 Command Parameter List Data Data category number (HEX) (HEX) Name Description Attribute Sensor head Default value FD-SS02 -400.0 to +400.0 FD-SF1(S) -2000 to +2000 FD-SF1(F) -400.0 to +400.0 FD-SS2(S) nn25 nn27 Integrated flow quantity (for Version A) Instantaneous flow rate (peak hold value) *3 R nn28 -4000 to +4000 - *4 R -16.00 to +16.00 FD-SF8(F) -4000 to +4000 FD-SS20(S) -40.00 to +40.00 FD-SS20(F) -4000 to +4000 FD-SS02 -21474836.48 to +21474836.
3-4 Command Parameter List Data Data category number (HEX) (HEX) nn31 3 Name Description Attribute Integrated flow quantity (except for version A) R Sensor head Default value FD-SS02 - Parameter range -21474836.4 to +21474836.4 FD-SF1(S) -214748364 to +214748364 FD-SF1(F) -21474836.4 to +21474836.4 FD-SS2(S) -214748364 to +214748364 FD-SS2(F) -21474836.4 to +21474836.4 FD-SF8(S) -2147483.64 to +2147483.64 FD-SF8(F) -21474836.4 to +21474836.4 FD-SS20(S) -2147483.64 to +2147483.
3-4 Command Parameter List Data Data category number (HEX) (HEX) nn47 Instantaneous flow rate setting 3 (P3) Instantaneous flow rate setting 4 (P4) nn49 System reserved nn4A Specified density for voLS Description Attribute *3 *3 R/W R/W Sensor head Default value Parameter range FD-SS02 130.0 FD-SF1(S) 0700 000.0 to 400.0 0000 to 2000 FD-SF1(F) 130.0 000.0 to 400.0 FD-SS2(S) 1300 0000 to 4000 FD-SS2(F) 130.0 000.0 to 400.0 FD-SF8(S) 05.00 00.00 to 16.
3-4 Command Parameter List Data Data category number (HEX) (HEX) Name nn80 Group-4 entry count nn81 System reserved nn82 Detection mode nn83 System reserved Description Attribute R R/W Sensor head Default value - 29 0 0: F-1 1: F-2 2: F-3 3: A-1 4: A-2 - 3 0: 0.05 s 1: 0.1 s 2: 0.5 s 3: 1.0 s 4: 2.5 s 5: 5.0 s 6: 10.0 s 7: 30.0 s 8: 60.0 s - 3 Communicating with the FD-S series nn84 R/W nn85 Average display R/W - 01.
3-4 Command Parameter List Data Data category number (HEX) (HEX) nn8F nn90 Name Description Attribute Hysteresis R/W Control Input Sensor head Default value Parameter range FD-SS02 001.0 FD-SF1(S) 0010 000.0 to 200.0 0000 to 1000 FD-SF1(F) 001.0 000.0 to 200.0 FD-SS2(S) 0010 0000 to 2000 FD-SS2(F) 001.0 000.0 to 200.0 FD-SF8(S) 00.10 00.00 to 08.00 FD-SF8(F) 0010 0000 to 2000 FD-SS20(S) 00.10 00.00 to 20.
3-4 Command Parameter List Data Data category number (HEX) (HEX) 00 3 Name Description Attribute Sensor head Default value Parameter range nnC3 Connected sensor (capacity) R - - 0: 0.
3-4 Command Parameter List *10 If the "low density zero cut function" is OFF, changing the "low density zero cut level" value does not take effect. *11 These parameters will be applied at the time of initial resetting. *12 The read character string is stored in ASCII code into the remote register.
3-4 Command Parameter List MEMO 3 Communicating with the FD-S series 3-34 - CC-Link Compatible Network Unit DL-CL1 User’s Manual (FD-S) -
Specifications This chapter describes the specifications and dimensions of the DLCL1. 4-1 4-2 4-3 4 Specifications ..................................................... 4-2 Data Processing Times ...................................... 4-3 Dimensions.........................................................
4-1 Specifications Product name CC-Link compatible communication unit Model DL-CL1 Communication method CC-Link compliant Compatible versions Ver. 2.00/Ver. 1.10 (selectable) Number of occu- Ver. 2.00: 1 station, 8x / 2 stations, 8x / 4 stations, 2x; (selectable) pied stations Ver. 1.10: 1 / 2 / 3 / 4 stations (selectable) CC-Link specifiType of station cations Transmission rate Setting of station numbers 4 Remote device station 156 kbps / 625 kbps / 2.
4-2 Data Processing Times This section describes the length of time taken from detection by a sensor(s) to data processing by PLC. CC-Link master unit CPU unit (1) DL-CL1 (2) Sensor amplifier (3) (4) 4 (3) Data communication time of DL-CL1 The lengths of time taken for the data of output or current value to be sent from a sensor amplifier to the DL-CL1 are summarized below.
4-3 Dimensions 29.4 《Unit：mm》 49.5 12.5 35.5 125 56.4 37.7 4 Specifications 24.1 4-4 ax. ( 42.2) When cover is opened: 58.3 max. 2.4 °m 35.4 78.2 - CC-Link Compatible Network Unit DL-CL1 User’s Manual (FD-S) - 9.
Appendix 5-1 5-2 5 Troubleshooting .................................................. 5-2 Index...................................................................
5-1 Troubleshooting The indicator lamps on the main unit can be checked to determine the cause of error and the corrective actions to take. LED indications during normal operation Power indicator (green) Communication indicator (green) Communication error indicator (not lit) Sensor communication indicator (green) Power indicator (PWR) This lamp indicates whether power is supplied to the DL-CL1. Condition Lighting in green 5 Not lit Condition Corrective action Power is supplied to the DL– CL1.
5-1 Troubleshooting Communication error indicator (L ERR) This lamp lights when the DL-CL1 is not communicating properly with the CC-Link maser station. Condition Condition Not lit Lighting in red Communicating correctly. • The data link is not configured properly. • The DL-CL1 is configured for Ver. 2 (monitor mode 2/full mode) while the master station is configured for Ver. 1.
5-1 Troubleshooting Sensor communication indicator This lamp indicates whether the DL-CL1 is connected correctly and communicating with sensor amplifiers. The cause of each error can be identified by reading the error information. LED status Not lit Green Red 5 Appendix 5-4 Condition Corrective action Power is not supplied to Check that the DL-CL1 is corthe DL-CL1. rectly connected with the sensor amplifiers. Solid Communicating correctly.
5-2 Index This alphabetical index provides a list of terms used in this document. A Appendix .......................................... 5-1 C I Installation and Connection to Sensor Amplifiers ................................. 2-2, 2-3 ID Number Assignments to Sensor Amplifiers .......................... 2-2 5 N Names and Functions of Each Part .... 1-4 S Specifications ................................... 4-2 T Troubleshooting ................................ 5-2 W Wiring .........................
Revision History Print date Revision no.
WARRANTIES AND DISCLAIMERS (1) KEYENCE warrants the Products to be free of defects in materials and workmanship for a period of one (1) year from the date of shipment. If any models or samples were shown to Buyer, such models or samples were used merely to illustrate the general type and quality of the Products and not to represent that the Products would necessarily conform to said models or samples.
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