Terminal Symbol Name Type
13 Bi-directional input
Digital input (OFF: 0 to 2 V DC, ON: 8 to 36 V DC, Impedance: 4.7 kΩ)
14 Bi-directional input
15 Bi-directional input
16 Bi-directional input
17 Bi-directional input
18 Bi-directional input
19 Bi-directional input
20 Bi-directional input
21 Bi-directional input
22 Bi-directional input
23 COM Common Common for digital input terminals 13 to 22
13.7.3 Changeover relay output characteristics
The relay is a changeover switch.
More information
See Hardware characteristics and configuration, General characteristics, Relay output characteristics and
configuration for more information.
13.7.4 Digital input characteristics
More information
See Hardware characteristics and configuration, General characteristics, Digital input characteristics and
configuration.
13.8 Input/output module IOM3.4
13.8.1 Input/output module IOM3.4
The input output module has 12 transistor outputs, and 16 digital inputs. These I/Os are all configurable.
DESIGNER'S HANDBOOK 4189340911K UK Page 439 of 521