Link Interfaces Reference
IOLINK-PRO & 520 Reference Manual —

3.3

Console Pinouts
The connector shown here and pinouts described here correspond to
the connector labeled “Console” on the back of the IOLINK-PRO & 520.
13 1
25 14
DB25 Female DCE
Contact
Number
CCITT
Circuit
Number Circuit
Circuit
Name
Direction
To From
DCE DCE
1 101 AA Protective Ground NA
2 103 BA Transmitted Data X
3 104 BB Received Data X
5 106 CB Clear to Send X
6 107 CC Data Set Ready X
7 102 AB Signal Ground NA
8 109 CF Received Line Signal Detector (CD) X
20 108.2 CD Data Terminal Ready X
22 125 CE Ring Indicator X
Figure 3 - 3 Console Pinouts
The connecting cable must be a shielded cable.
When connecting the IOLINK router console directly to a modem, a null modem cable must be used
because both the IOLINK router console and the modem are DCE devices. A null modem cable with
pinouts according to the following figure must be used.
IOLINK Contact
Number
Modem Contact
Number
820
32
23
20 8
77
45
54
22 22
Figure 3 - 4 Console Null Modem Cable Pinouts