Installation manual

Publication 1747-RM001G-EN-P - November 2008
SLC 5/03 (OS30x), SLC 5/04 (OS40x) and SLC 5/05 (OS50x) Firmware History A-19
OS302, Series C, FRN 10
OS401, Series C, FRN 10
OS501, Series C, FRN 10
released: January 2006
Enhancements
• Three new explicit message instructions:
– CEM (ControlNet Explicit Message)
– DEM (DeviceNet Explicit Message)
– EEM (EtherNet/IP Explicit Message) – SLC 5/05 only
The CEM, DEM and EEM explicit message instructions allow generic
Common Industrial Protocol (CIP) commands to be initiated to
devices, such as drives, communicating on ControlNet, DeviceNet and
EtherNet/IP networks, respectively. All three instructions require
RSLogix 500 version 7.10 or higher software for programming.
The CEM instruction utilizes the explicit message capability built into
the 1747-SCNR ControlNet scanner module, while the DEM
instruction utilizes the explicit message capability built into the
1747-SDN DeviceNet scanner module. While not adding any additional
capability over what already exists in the scanner modules, the CEM and
DEM instructions greatly simplify the programming, configuration,
monitoring and troubleshooting of explicit messages on ControlNet and
DeviceNet.
The EEM instruction provides new explicit message capability for the
SLC 5/05 processor on an EtherNet/IP network. This capability is
implemented through the processor’s channel one Ethernet port. It
shares the same queuing and buffering scheme, as well as Ethernet
connection resources, that are used by the Ethernet MSG instruction.
• New Read Program Checksum (RPC) instruction
The RPC instruction copies the checksum of the processor program
from either the processor’s RAM memory or from the installed memory
module into the designated destination integer file location. The
program checksum is a 16-bit value that is calculated for the entire
ladder logic image, excluding data table values. The checksum changes
any time program edits are made. Therefore, the RPC instruction can be
used within the user ladder logic to determine whether online edits have
changed the checksum from a known value or can verify that the
program in the memory module matches the program in the processor’s
RAM memory.
This instruction requires RSLogix 500 version 7.10 or higher software
for programming.
• Dynamic Host Configuration Protocol (DHCP) capability – SLC 5/05
only