IAI America ERC - Manual (Page 74)

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[5] PORT switch
A switch for enabling/disabling the teaching pendant.
Set the switch to ON when a teaching pendant is used, or OFF when teaching pendant is not used.
[6] Monitor LEDs
LED1 --- Lit when the controller is transmitting
LED2 --- Lit when the RS232 is transmitting
(Reference) Connection drawing of a RS232C crossed cable
SIO converter end PC end
D-sub 9-pin, female
D-sub 9-pin, female
Signal No
1
RD 2
SD 3
ER 4
SG 5
DR 6
RS 7
CS 8
9
No Signal
1
2 RXD
3
TXD
4 DTR
5 SG
6 DSR
7 RTS
8 CTS
9