Instruction manual

IMS01J04-E2 11
6. COMMUNICATION DATA
6.1 Request Command and Data Transfer
Data transfer between PLC and SR Mini HG SYSTEM are executed by request command.
 Request command “0: Monitor (PLC  SR Mini HG SYSTEM)”
Command which status requests the SR Mini HG SYSTEM to write data such as temperature
measured values, etc. (attribute: RO) to the PLC side.
The SR Mini HG SYSTEM always repeats data writing until “1: Setting” or “2: Set value monitor”
is set to the request command.
The PCP communication is set to “1: Writing on monitor data” during data transfer.
 Request command “1: Setting (PLC  SR Mini HG SYSTEM)”
Command which requests the SR Mini HG SYSTEM to read data such as temperature set values,
etc. (attribute: R/W or WO) from the PLC side. Just when “1: Setting” is set to the request
command, the SR Mini HG SYSTEM starts reading the data from the PLC side.
The PCP communication status is set to “2: Reading out setting data” during data transfer. After the
data is transferred, the request command and PCP communication status returns to “0: Monitor”
and “1: Writing on monitor data,” respectively.
 Request command “2: Set value monitor (PLC  SR Mini HG SYSTEM)”
Command which requests the SR Mini HG SYSTEM to write data such as temperature set values,
etc. (attribute: R/W) to the PLC side. Just when “2: Set value monitor” is set to the request
command, the SR Mini HG SYSTEM starts writing the data to the PLC side.
The PCP communication status is set to “3: Writing on setting data” during data transfer. After the
data is transferred, the request command and PCP communication status returns to “0: Monitor”
and “1: Writing on monitor data,” respectively.