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Sample Ladder Programs Section 4-5
Example: Monitoring
DST1-ID12SL-1 Safety
Input Terminals
The settings are shown here for acquiring safety input monitor data.
■ Request Message Contents
■ Fixed Buffer Data Arrangement (Memory Maps)
The settings are shown here for communications (no protocol) using fixed
buffers, with Fixed Buffer No. 2 used for request messages and Fixed Buffer
No. 1 used for response messages.
Fixed Buffer No. 2: BUFSND Instruction Area
Fixed Buffer No. 1: BUFRCV Instruction Area
Item Setting
Destination node address 01 hex
Service code 0E hex
Class ID 04 hex
Instance ID 310 hex
Send data (attribute ID) 03 hex
Address 15 8 7 0 Remarks
D300 00 hex 0D hex Send data length
D301 00 hex FF hex Send data (message sequence number)
D302 00 hex 00 hex Send data (timeout monitor time)
D303 00 hex 07 hex Send data (data size)
D304 0E hex 01 hex Send data (node address, service code)
D305 00 hex 04 hex Send data (class ID)
D306 03 hex 10 hex Send data (instance ID)
D307 00 hex 03 hex Send data (request data (attribute ID))
Address 15 8 7 0 Remarks
D500 00 hex 08 hex Receive data length
D301 00 hex FF hex Receive data (message sequence num-
ber)
D302 00 hex 04 hex Receive data (data size)
D303 CB hex 01 hex Receive data (node address, service
code)
D304 ** ** Receive data (data)
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