Rockwell Automation Logix5000 Controllers ASCII Strings Programming Manual User Manual

Page 11

Communicating with an ASCII device Chapter 1

3. On the Mode menu, choose User and type the configuration settings for

the serial port.

•

Choose the baud rate, data bits, parity, and stop bits.

•

In the Control Line menu, choose the Control Line option:

And

And this is the

Choose

Then

You are not using a modem --------------------------------------------------------------->

No Handshaking

You are using a modem

Modems in a point-to-point link

are full-duplex

----------------------------->

Full Duplex

Master modem is full-duplex

while slave modem is half-duplex

master controller.

Full Duplex

slave controller

Half Duplex

Select the Continuous Carrier check box.

All modems in the system are
half-duplex

----------------------------->

Half Duplex

Clear the Continuous Carrier check box

(default).

•

In the RTS Send Delay box, type the delay (in 20 ms units) between

the time the RTS signal turns on (high) and the time that data is sent.

For example, a value of 4 produces an 80 ms delay.

•

In the RTS Off Delay box, type the delay (in 20 ms units) between the

time the last character is sent and the time that the RTS signal turns off

(low).

4. Click Apply.

Rockwell Automation Publication 1756-PM013D-EN-P - October 2014