Endress+Hauser Liquiline CM44P - Page 38

Electrical connection Liquiline CM44P
38 Endress+Hauser
LED Identifier Color Description
PWR Power GN Supply voltage is applied and module is initialized
BF Bus failure RD Bus failure
SF System failure RD Device error
COM Communication YE Modbus message sent or received
T Bus termination YE • Off = No termination
• On = Termination is used
DIP switches on front of module
DIP Factory setting Assignment
1-128 ON Bus address (→ "Commissioning/communication")
OFF Write protection: "ON" = configuration not possible via the bus, only via local
operation
Service OFF The switch has no function
5.4.2 Connection via M12 plug (field device only)
PROFIBUS DP
M12 Y-section Wiring in M12 Y section Pin assignment in plug and socket
RD
GN
P0V
P5V
82
81
J1
P2
P1
96
95
99
 50 M12 plug-in connector
P2
J1
1
2
3
4
5
1
2
3
4
5
P1
1
2
3
4
5
 51 Wiring
1 2
34
5
2 1
43
5
 52 Plug (left) and socket
(right)
1 P5V, 5 V power supply for
external terminating
resistor
2 A
3 P0V, reference potential for
P5V
4 B
5 n.c., not connected
* Screen
When using the M12 Y-section, the maximum data transfer rate is limited to 1.5 MBit/s.
For direct wiring, the maximum data transfer rate is 12 MBit/s.