Omron CJ1W-SCU32 Operation Manual page 79

Precautions for Safe Use
Do not connect the Pin 6 (+5-V power supply) of the RS-232C port on the Unit to any external
device other than an NT-AL001 Link Adapter. Otherwise, the external device and the Serial Com-
munications Unit may be damaged.
Use the OMRON Cables specified in this manual or make your own cables. Do not use commer-
cially available RS-232C cables sold for personal computers. Otherwise, the external device and
the Serial Communications Unit may be damaged.
The following cables are provided for connection to NT-AL001 Link Adapters. We recommend that
you use these cables.
NT-AL001 connecting cables:
XW2Z-070T-1 (0.7 m)
XW2Z-200T-1 (2 m)
Applicable Connectors
Plug: XM2A-0901 (manufactured by OMRON) or equivalent
Hood: XM2S-0911-E (manufactured by OMRON) or equivalent
One plug and one hood are provided for each port.
Recommended Cables
UL2464 AWG28 × 5P IFS-RVV-SB
AWG28 × 5P IFVV-SB
UL2464-SB (MA) 5P × 28AWG (7/0.127)
CO-MA-VV-SB 5P × 28AWG (7/0.127)
Cable length: 15 m max.
RS-422A/485 Port
Protocol
Communications
method
Synchronous mode
Baud rate
Connection
configuration
Communications
distance
Interface
Protocol
Communications
method
Synchronous mode
Baud rate
Connection
configuration
Communications
distance
Interface
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
2 Initial Settings and Allocations of Device Variable for CJ-series Unit
Protocol macro
Full-duplex or half-duplex
Start-stop synchronization (asynchronous mode)
1200/2400/4800/9600/
19200/38400/57600/115200/230400 bps
1:N (N: 32 Units max.)
500 m max. (The total combined cable length is 500m
max. T-branch lines must be a maximum of 10m long.)
Complies with EIA RS-485
No-proto-
col
Full-duplex ---
--- ---
1200/2400/4800/9600/19200/38400/57600/115200/230400 bps
1:N (N: 32 Units max.)
500 m max. (The total combined cable length is 500m max. T-branch lines must be a
maximum of 10m long.)
Complies with EIA RS-485
Serial Gateway
---
---
Modbus-RTU
2-5
2