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SIO CONNECTOR (J4) SIGNAL DEFINITION
MIO Edge Connector EIA Connector
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Table 9
Signal Name
Chassis Ground AA*
1
TTL Out 2
14
2
Transmit
Open Collector Out 3
15
3
Receive Data BB*
16
TTL in 1
4
Request to Send CA*
17
Current Loop in +
5
Clear to Send CB*
18
TTL Out 1
Data Set Ready CC*
6
19
TTL in 2
7
Signal Ground AB*
20
Data Terminal Ready CD*
8
Carrier Detect CF*
21
TTL in 3
+5 Volts
9
22
10
Open Collector Out 2
23
Current Loop Out +
11
EIA Driver or Receiver
24
Current Loop In -
12
Open Collector Out 1
25
Current Loop Out -
13
__
* EIA Standard Signal
Designation
User Guide
Data BA*
2
2
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