Settings For Sending Fins Commands - Omron CJ - REFERENCE MANUAL 07-2009 Reference Manual

Settings for Sending FINS Commands

3-4 Settings for Sending FINS Commands
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SA1
Source node address. Specify within the following ranges (hex).
00: Internal communications in PLC
01 to 20: Node address in Controller Link Network (1 to 32 decimal)
01 to FE: Ethernet (1 to 254 decimal,
for Ethernet Units with model numbers ending in ETN21)
SA2
Source unit address. Specify within the following ranges (hex).
00: CPU Unit
10 to 1F: CPU Bus Unit
SID
Service ID. Used to identify the process generating the transmission. Set the
SID to any number between 00 and FF
Note 1. The unit address for a CPU Bus Unit is 10 (hexadecimal) plus the unit num-
ber set on the front panel of the CPU Bus Unit.
2. With a CS/CJ-series CPU Unit with unit version 2.0, CP-series CPU Unit,
or NSJ Controller, the GCT (Gateway Count: Number of Bridges Passed
Through) in FINS command/response frames is decremented from to 07
hex (variable). The GCT was previously decremented from 02 hex. For CS/
CJ-series CPU Unit with unit version 3.0 or later, the GCT (Gateway Count:
Number of Bridges Passed Through) in FINS command/response frames
is decremented from to 02 hex by default. If the user specified CX-Net for
this CPU Unit version, the GCT will be decremented from 07 hex. With a
CS/CJ-series CPU Unit with unit version 3.0 or later, NSJ Controller, or CP-
series CPU Unit, the GCT will be decremented from 02 hex by default and
from 07 hex if the user selects CX-Net.
3. The GCT (Gateway Count: Number of Bridges Passed Through) in the
FINS header in FINS command/response frames should not be checked
in the user applications, e.g., in the host computer. The GCT is for system
use only and verification may fail if attempted from a user application. This
is particularly important for CS/CJ-series CPU Unit with unit version 2.0 or
later, CP-series CPU Unit, or NSJ Controller.
Settings for sending
FINS commands
Note 1. Set these as operands when executing CMND(490).
2. Do not set the gateway count when using CMND(490).
Command format
Network address
Address
Node address
Unit address
Other Response required/not required
Number of retries (See note 1.)
Communications port No. (See note 1.)
Response monitor time (See note 1.)
Gateway count (See note 2.)
Section 3-4