Mitsubishi Electric AJ71C24-S6 User Manual page 78

4.
SElTINGS AND PROCEDURES BEFORE OPERATION
MELSEC-A
4.6 Self-loopback Test
The self-loopback test function is used (when the AJ71 C24 is not connected
t o the computer) t o check that the AJ7C24 module is operating normally. This
function is selected by setting the mode setting switch t o "F".
4.6.1
Procedure t o carry out the self-loopback test
The procedure t o carry out the self-loopback test is as follows:
Step 1 Connect the cables
Connect cables to the RS-232C and RS-422 connectors as shown
below.
I
RS-232C Cable
Connections
AJ71C24
Cable
Signal Connections
names number
SG
CD
OTR
Step 2 Set the mode setting switch
RS-422 Cable
Connections
AJ71
C24 Cable
Signal
Names
Connections
Set the mode setting switch t o " F to select the self-loopback test.
(Section 4.3.1 tells details of how t o set this switch.)