For the open-circuit detection (cut wire), each analog input channel is pulled up
to "plus" by a high-resistance resistor. If nothing is connected, the maximum
voltage will be read in then.
Generally, analog signals must be laid in shielded cables. The cable shields
must be earthed at both sides of the cables. In order to avoid unacceptable
potential differences between different parts of the installation, low resistance
equipotential bonding conductors must be laid.
Only for simple applications (low electromagnetic disturbances, no high require-
ment on precision), the shielding can also be omitted.
Electrical connection of CANopen bus module CI581-CN:
+
-
+
-
+
-
+
-
+
-
+
-
PTC
AI0+
AI1+
AI2+
AI3+
AI-
2.0
2.1
2.2
2.3
2.4
PTC
2.5
2.6
2.7
AO0+
AO1+
AO-
4.0 DO0
4.1 DO1
4.2 DO2
4.3 DO3
4.4 DO4
4.5 DO5
4.6 DO6
4.7 DO7
DI0 3.0
DI1 3.1
DI2 3.2
DI3 3.3
DI4 3.4
DI5 3.5
DI6 3.6
DI7 3.7
2.8
2.9
UP +24 V
ZP 0 V
3.8
3.9 3.9
3.8
UP3 +24 V
ZP 0 V
Fig. 116: Connection of the bus module CI581-CN
The module provides several diagnosis functions
Ä
Chapter 1.7.1.2.8 “Diagnosis”
on page 725.
For the measuring ranges that can be configured, please refer to the sections Measuring
Ranges
Ä
Chapter 1.7.1.2.10 “Measuring Ranges” on page 731 and Parameterization
Ä
Chapter 1.7.1.2.7 “Parameterization” on page 721.
The meaning of the LEDs is described in the section for the state LEDs
Ä
Chapter 1.7.1.2.9
“State LEDs” on page 729.
The maximum possible bus length of a CAN network depends on bit rate (transmission rate)
and cable type. The sum of all bus segments must not exceed the maximum bus length
Bus Length
Communication Interface Modules (S500) > CANopen
2019/04/173ADR010121, 13, en_US710
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