Omron CJ - PROGRAMMING MANUAL 12-2009 - Page 343

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Serial Communications Section 6-3
Serial Gateway Specifications
Converting FINS to CompoWay/F
OMRON Components connected serially to the CPU Unit’s RS-232C port or
peripheral port via CompoWay/F can be accessed from the PLC or PT using
CompoWay/F commands enclosed in FINS messages.
• Sent FINS message: FINS header + FINS command code 2803 hex +
CompoWay/F command
• Message after conversion: CompoWay/F command
For details on FINS command code 2803 hex, refer to the Communications
Commands Reference Manual (W342).
Item Details
Conversion source FINS command (received via FINS network, Host Link FINS,
peripheral bus, NT links, or CPU bus)
Conversion function Received FINS commands are converted according to the fol-
lowing values before sending to the serial port (peripheral port
or RS-232C port) of the CPU Unit.
2803 hex: Removes FINS header and converts to CompoWay/
F command
After conversion CompoWay/F commands
Serial communica-
tions method
1:N half-duplex communications
Maximum number of
connected Units
31 slaves
Supported serial
communications
modes
Serial Gateway mode
Response timeout
monitoring
The time is monitored from when a message converted to
CompoWay/F protocol using the Serial Gateway is sent until a
response is received (enabled in Serial Gateway mode or pro-
tocol macro mode).
Default: 5 s; Setting range: 0.1 to 25.5 s
Note If a timeout occurs, the FINS end code is returned to the
source of the FINS command (0205 hex: Response tim-
eout).
Send delay None
FINS message (via network or CPU bus)
CompoWay/F command2803FINS header
RS-232C or peripheral por
t
CPU Unit's
RS-232C or
peripheral port
CompoWay/F command
The Serial Gateway is enabled when the RS-232C or
peripheral port is set to Serial Gateway mode.
CompoWay/F command2803FINS header CompoWay/F command
FINS message
CompoWay/F command
CPU Unit
(CMND(490)
instruction) or
PT (Program-
mable Termi-
nal)
CompoWay/F command encapsulated
using FINS command 2803 hex
CPU Unit's
RS-232C or
peripheral port
CompoWay/F
-compatible
OMRON
Component
(Via network or CPU bus)