Omron CJ - PROGRAMMING MANUAL 08-2008 Programming Manual page 339

Serial Communications
FINS message (via network or CPU bus)
FINS header
Serial Gateway Specifications
Converting FINS to CompoWay/F
FINS message
CPU Unit
(CMND(490)
FINS header
instruction) or
CompoWay/F command encapsulated
PT (Program-
using FINS command 2803 hex
mable Termi-
nal)
2803
CompoWay/F command
The Serial Gateway is enabled when the RS-232C or
peripheral port is set to Serial Gateway mode.
Item
Conversion source
Conversion function
After conversion
Serial communica-
tions method
Maximum number of
connected Units
Supported serial
communications
modes
Response timeout
monitoring
Send delay
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
2803
CompoWay/F command
(Via network or CPU bus)
For details on FINS command code 2803 hex, refer to the Communications
Commands Reference Manual (W342).
RS-232C or peripheral port
CPU Unit's
RS-232C or
CompoWay/F command
peripheral port
FINS command (received via FINS network, Host Link FINS,
peripheral bus, NT links, or CPU bus)
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
CompoWay/F commands
1:N half-duplex communications
31 slaves
Serial Gateway mode
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).
None
CompoWay/F command
CPU Unit's
RS-232C or
CompoWay/F command
peripheral port
Section 6-3
Details
CompoWay/F
-compatible
OMRON
Component
301