
Interface Pinouts
IOLINK-520 & IOLINK-PRO Installation & Applications Guide — D.9
V.35 Null-Modem Cable ConfigurationProtectiveGND
TransmittedData (A)
TransmittedData (B)
ReceivedData (A)
ReceivedData (B)
TransmitterSignal Element Timing (A)
TransmitterSignal Element Timing (B)
ReceiverSignal Element Timing (A)
ReceiverSignal Element Timing (B)
TransmitterSignal Element Timing (A)
TransmitterSignal Element Timing (B)
DataTerminal Ready
SignalG round
DataChannel Received Line Signal Detector (CD)
Requestto Send
DataSet Ready
TransmitterSignal Element Timing (A)
DB25MALE
1
9
10
11
12
18
19
14
16
23
25
20
7
8
4
6
DB25MALE
1
11
12
9
10
14
16
23
25
18
19
8
7
20
6
4
TransmittedData (A)
ReceivedData (A)
TransmittedData (B)
ReceivedData (B)
ReceiverSignal Element Timing (A)
ReceiverSignal Element Timing (B)
TransmitterSignal Element Timing (B)
TransmitterSignal Element Timing (A)
TransmitterSignal Element Timing (B)
DataChannel Received Line Signal Detector (CD)
DataTerminal Ready
SignalGround
DataSet Ready
Requestto Send
ProtectiveGND
Figure D – 10 V-35 Null-Modem Cable
The connecting cable must be a shielded cable.
Circuits which are paired (contain an (A) and (B) reference) should be connected to
twisted pairs within the connecting cable.