Rs232C Link Pinouts - Perle IOLINK-PRO IOLINK-520 Reference Manual

The connector shown here and pinouts described here correspond to
the connector labeled "RS232/ V.24" on the back of the IOLINK-PRO & 520.
CCITT
Contact Circuit
Number Number
1 101
2 103
3 104
4 105
5
6 107
7 102
8 109
9
10
11
12
13
14
15 114
16
17 115
18 141
19
20 108.2
21
22 125
23
24 113
25
The connecting cable must be a shielded cable.
NOTE For U.K. Approval:
The connecting cable should be manufactured from Belden Cable, or a cable with equivalent specifications.
Each end must be terminated in a male 25 pin X.21 bis connector as defined in ISO-2110 1989. The cable
may be any length between 0 and 5M.
V.24 & RS232C Link Pinouts
13
25
DB25 Female DTE
Circuit
AA
BA
BB
CA
CC
AB
CF Received Line Signal Detector (CD)
DB Transmit Signal Element Timing (DCE Source)
DD Receive Signal Element Timing (DCE Source)
CD
CE
DA Transmit Signal Element Timing (DTE Source)
Figure 3 - 7 RS232 Link Pinouts
Link Interfaces Reference
1
14
Circuit
Name
Protective Ground
Transmitted Data
Received Data
Request to Send
----------
Data Set Ready
Signal Ground
----------
----------
----------
----------
----------
----------
----------
Local Loopback
----------
Data Terminal Ready
----------
Ring Indicator
----------
----------
IOLINK-PRO & 520 Reference Manual — 3.5
Direction
To From
DCE DCE
NA
X
X
X
X
NA
X
X
X
X
X
X
X