Omron NT31 NT31C manual Set the unit number to 0 through F so

Connecting to the RS-232C Port at the Host Section 4-1

*2 The 1-to-N setting enables BCC (Block Check Character). It is not actually possible to connect more than one NT31/NT31C in a single host link.

Set the CPU bus unit settings directly from a Programming Device (e.g. SYS-

MAC support software).

For details on the CPU bus unit settings, refer to the SYSMAC CVM1/CV-series

Host Link Unit Operation Manual (W205-E1-j).

Setting the Front Switches

Communications port 1 (RS-232C)

Communications port 2 (RS-232C/RS-422A)

I/O port selector switch

RS-232C

RS-422A

@Unit # (SW3, SW4)

When using communication port 2, set these switches to 0.

@I/O port selection (selector switch) Set this to RS-232C.

@CTS selection (DIP SW2 and SW3)

Set SW2 or SW3 to ON. (Set this always to 0V.)

To use communication port 1, set SW2. To use communication port 2, set SW3.

@Communication condition setting (DIP SW1) Set this switch to OFF.

Communication is executed in accordance with the CPU bus unit system settings made at the PC. The initial values for the system settings are as follows.

-Communications speed: 9600 bps

-Parity: Even

-Xon/Xoff control: Not executed

-Communication method: Full duplex

-Stop bits: 2 stop bits

-Data length: 7 bits

Connecting to a CS1-series Serial Communication Unit

CS1 series Backplane mounted type: CS1W-SCU21

Setting the Front Switches

Set the unit number of the serial communication unit by using the rotary switch located on the front panel. Set each switch with a flat blade screwdriver so that the values or symbols in the setting value window agree with the following.

SCU21
RUN		RDY
ERC		ERH
SD1		SD2
RD1		RD2
UNIT		FE	Set the unit number to 0 through F so
No.	10
		C	that it will not overlap with the numbers

used in other units.

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