Command Format Received By The Host Computer - Omron CJ - REFERENCE MANUAL 07-2009 Reference Manual

FINS Commands with Host Link Protocol
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Command Format Received by the Host Computer

Number of Retries
Set the maximum number of times CMND(490) is to be resent if no re-
sponse is returned.
Response Monitor Time
If the Response Setting is set to require a response, set the response mon-
itor time.
Note If response data longer than that set in the Number of Bytes of Response
Data is returned, all extra response data will not be stored. If response data
shorter than that set in the Number of Bytes of Response Data is returned,
the response data will be stored, and the remaining area will stay at its previ-
ous values.
Control Word Settings
The setting range for each item is shown on the following table.
Item
Number of bytes of com-
mand data
Number of bytes of
response data
Serial port number
Destination network
address
Destination node address 00:
Destination unit address
Response setting
Communications port
number
Number of retries
Response monitor time
Note To execute CMND(490) normally, programming needs to be written to process
the command received by the host computer and return the proper response.
FINS commands sent to the host computer are received at the host computer
in the format shown below.
Setting
0002 to 021E (2 to 542 bytes)
0002 to 021E (2 to 542 bytes)
00: CPU Unit, Inner Board, CPU Bus Unit
01: Port 1
02: Port 2
00: Local network
01 to 7F:Network address (1 to 127)
Internal communications in PLC
01 to FE: Node address of Ethernet Unit with model
number ending in ETN21 (1 to 254)
01 to 7E: Node address of Ethernet Unit with other
model number (1 to 126)
01 to 3E: Node address (1 to 62) for Controller Link
10 to 1F: Serial Communications Unit (unit address 0 to
15)
0: Required
1: Not required
0 to 7 (0 to 7)
0 to F (0 to 15)
0000: Default (2 s)
0001 to FFFF: 0.1 to 6,553.5 s (unit: 0.1 s)
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