Omron SYSMAC CJ1W-SCU21-V1 User Manual (English)

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Specifications Section 1-6

Converted format • CompoWay/F commands

• Modbus-RTU commands

• Modbus-ASCII commands

• Host Link FINS commands

Enabled serial com-

munications mode

Serial Gateway mode or protocol macro mode

Queuing functions Up to five FINS commands can be converted and then queued

for processing.

Protocol macro exe-

cution processing

When a FINS command is received during protocol macro

execution, the Serial Gateway is executed using an interrupt

between steps in the communications sequence. If the next

step is a RECEIVE command, the Serial Gateway will not be

executed until the next step. For other conditions, the interrupt

is executed immediately.

Note The reception buffer is cleared during Serial Gateway

execution.

Note The Serial Gateway can be prohibited in protocol macro

mode by turning ON the Serial Gateway Prohibit Switch

in the CIO Area.

Response timeout

monitoring

The time is monitored from when the message is converted

into the specified protocol using the Serial Gateway until the

response is received (in Serial Gateway mode or protocol

macro mode).

Default: 5 s (setting range: 0.1 to 25.5 s)

Note When a timeout occurs, the FINS end code (0205 hex:

Response timeout) is returned to the source of the FINS

command and a response is received after a timeout

occurs.

Send start timeout

monitoring

The time is monitored from when the FINS command is

received until it is converted into the specified protocol and

starts to be sent (in protocol macro mode only).

Default: 5 s (setting range: 0.1 to 25.5 s)

Note When a timeout occurs, the FINS end code (0204 hex:

Remote node busy) is returned to the source of the

FINS command. The send processing will not be exe-

cuted and the received FINS command will be dis-

carded.

Send delay The time can be set from when the message is converted into

another protocol using Serial Gateway conversion until the

data is actually sent. (Serial Gateway or protocol macro mode)

Default: 0 s (setting range: 0.01 to 300.00 s)

Item Description

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Omron SYSMAC CJ1W-SCU21-V1 Specifications

General

Model	CJ1W-SCU21-V1
Type	Serial Communications Unit
Number of Ports	1
Parity Check	None, Even, Odd
Manufacturer	Omron
Operating Temperature	0 to 55 °C
Storage Temperature	-25 to 65 °C
Data Bits	7, 8
Stop Bits	1 or 2 bits
Flow Control	RTS/CTS
Isolation	Photocoupler isolation
Applicable PLC	CJ1 Series
Power Supply	5 VDC (supplied from the PLC backplane)
Compatible PLC Series	CJ1 Series
Protocol Support	NT Link, Host Link, No-protocol Mode
Baud Rate	300 to 115200 bps