Omron CJ1W-SCU22, Руководство по эксплуатации, Страница: 54 / 478

1 Introduction
1-14
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
1-6 Specifications
*1 The Serial Gateway can also be executed in Protocol Macro Mode.
*2 The current consumption is for one Serial Communications Unit.
When an NT-AL001 Link Adapter is connected to the Serial Communications Unit, power is supplied to the Link
Adapter from the Unit.
Add a current consumption of 150 mA for each Link Adapter that is connected.
The current consumption value varies by unit. Take a note of this when you replace a Unit.
In the above specifications, the mark "x" indicates additional 150 mA per RS-232C port to which an NT-AL001
Link Adapter is connected. A 5-V power is supplied from the port to the Adabor.
1-6-1 Serial Communications Unit
PLC Series CJ-series
Device name Serial Communications Unit
Classification CPU Bus Unit
Model number CJ1W-SCU22 CJ1W-SCU32 CJ1W-SCU42
Serial communica-
tions ports Port 1 RS-232C RS-422A/485 RS-422A/485
Port 2 RS-232C RS-422A/485 RS-232C
Protocols Port 1 You can select Protocol Macro, Serial Gateway (*1), No-protocol, Modbus-
RTU Slave, or Loopback Test for each port.
Port 2
Number of mount-
able Units CPU Rack A total of up to 16 Units, including all other CPU Bus Units.
No restrictions on the mounting location.
Expansion Rack
Data exchange
with the CPU Unit Ordinary
refreshing of software
switches and status Data exchange with I/O port (constant data exchange with the CPU Unit)
Transfer the System
Setting data from CPU
Unit Data exchange with I/O port
Data is transferred from the CPU Unit at the following times:
• When the Unit restarts or the Controller is reset, including when the
power is turned ON
• When the variable Settings Change
(_CJB_SCU
@@ P1ChgSta/_CJB_SCU @@ P2ChgSta) changes to TRUE.
( @@ indicates Unit numbers.)
Supporting CPU Units NJ-series CPU Units
Current consumption (*2) 280 mA + x 400 mA 360 mA + x
Weight 160 g max. 120 g max. 140 g max.