3 | Assembly
FISCHER Mess- und Regeltechnik GmbH
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BA_EN_DE43
3.3 Electrical connections
• By authorized and qualified specialized personnel only.
• When connecting the unit, the national and international electro-technical
regulations must be observed.
• Disconnect the system from the mains, before electrically connecting the
device.
• Do not connect the connector if strained.
Plug 1
Plug 2
E1
E2
E3
E4
Access
Modbus configuration
Fig. 8:
Electrical connections
WARNING! Please note for the power supply to the devices that the M12
plugs are only suitable for max. 2A.
Plug 1 (Input)
Supply and bus connection
2
1
3
4
5
A
Fig. 9:
M12 connector 5-pin
PIN Signal name
Cable colour
A
Coding
1
“Supply” dialogue
+U
b
brown
2
BUS-D1
white
3
“Supply” dialogue
-U
b
blue
4
BUS-D0
black
5
BUS-R
grey
Plug 2 (Output)
Supply and bus connection
1
2
4
3
5
A
Fig. 10:
M12 bush 5-pin
PIN Signal name
Cable colour
A
Coding
1
“Supply” dialogue
+U
b
brown
2
BUS-D1
white
3
“Supply” dialogue
-U
b
blue
4
BUS-D0
black
5
BUS-R
grey
Digital inputs (E1 … E4)
Input for external potential-free contacts.
1
4
3
Fig. 11:
M8 bush
PIN Signal name
Cable colour
1
Supply contact 1 (+)
+U
E1
brown
3
Supply contact 1 (-)
-U
E1
blue
4
Input
E1
black
The assignment of the M8 bushes is the same for all contacts, which is why
only the assignment of digital input E1 is shown here as a example.
