Installation manual

Publication 1747-RM001G-EN-P - November 2008
12-48 SLC Communication Instructions
• Class (hex)/(dec)
Possible Classes are 0 to FF (hex). See Volume 1 of the CIP Common
Specification for the list of defined Classes. You may either enter in a
hexadecimal Class value in the (hex) field or a decimal Class value in the
(dec) field.
• Instance (hex)/(dec)
Possible Instances are 0 to FFFF (hex). See Volume 1 of the CIP
Common Specification for the list of valid Instances for each Class. You
may either enter in a hexadecimal Instance value in the (hex) field or a
decimal Instance value in the (dec) field.
• Attribute (hex)/(dec)
Possible Attributes are 0 to FFFF (hex). See Volume 1 of the CIP
Common Specification for the list of valid Attributes for each Class.
You may either enter in a hexadecimal Attribute value in the (hex) field
or a decimal Attribute value in the (dec) field.
• Member (hex)/(dec)
Possible Members are 0 to FFFF (hex). See Volume 1 of the CIP
Common Specification for the list of valid Members for each Class. You
may either enter in a hexadecimal Member value in the (hex) field or a
decimal Member value in the (dec) field.
Definitions for Message Status Bits on the General Tab
The table below lists the various status bits associated with the CEM
instruction as displayed in the CEM instruction setup screen.
• Timeout bit TO (word 0, bit 8) is set when the scanner module times
out the message either due to no response from the target device or due
to no reply being returned within the configured timeout period. The
ER bit will be set at the same time the TO bit is set. This bit is reset the
next time the message rung goes from false to true. Do not set or reset
this bit. It is informational only.
Table 12.18 CEM Instruction Setup Screen Status Bits
Bit Definition Bit Mnemonic Bit Address
Timeout TO 08
Error ER 12
Done DN 13
Enabled EN 15
Waiting for slot WS 10