Installation manual
Publication 1747-RM001G-EN-P - November 2008
SLC Status File B-15
S:2/5 Status Incoming Command Pending Bit (Channel 1)
This bit is set when the processor determines that another
node on the network has requested information or supplied a
command to it. This bit can be set at any time. This bit is
cleared when the processor services the request (or command).
Use this bit as a condition of an SVC instruction to enhance the
communication capability of your processor.
••••
S:2/6 Status Message Reply Pending Bit (Channel 1)
This bit is set when another node on the network has supplied
the information you requested in the MSG instruction of your
processor. This bit is cleared when the processor stores the
information and updates your MSG instruction.
Use this bit as a condition of an SVC instruction to enhance the
communication capability of your processor.
••••
S:2/7 Status Outgoing Message Command Pending Bit (Channel 1)
This bit is set when one or more messages in your program are
enabled and waiting, but no message is being transmitted at
the time. As soon as transmission of a message begins, the bit
is cleared. After transmission, the bit is set again if there are
further messages waiting. It remains cleared if there are no
further messages waiting.
Use this bit as a condition of an SVC instruction to enhance the
communication capability of your processor.
••••
S:2/8 Dynamic
Config
CIF (Common Interface File) Addressing Mode
This bit controls the mode used to address elements in the CIF
file (data file 9) when processing a communication request.
Word address mode - in effect when the bit is clear (0): This is
the default setting, compatible with other SLC 500 devices on
the DH-485 network.
Byte address mode - in effect when the bit is set (1): This mode
is used when the processor is receiving a message from a
device on the network, possibly through a bridge or gateway.
This setting is compatible with Allen-Bradley PLC
inter-processor communication.
••••
Table B.2 Status File Functions (Continued)
Address Classification Description Fixed
5/01
5/02 5/03 5/04 5/05