Endress+Hauser Liquiline CM44P - Connecting PROFIBUS DP or Modbus RS 485

Electrical connection Liquiline CM44P
44 Endress+Hauser
6.5 Connecting PROFIBUS DP or Modbus RS 485
6.5.1 Module 485
 63 Module
Ethernet
81
82
DIP switch
on
1
2
4
8
16
32
64
128/SW
Service
T
COM
SF
BF
PWR
DGND
VP
96'
95'
99'
Termi-
nation
DP/
RS485
96
95
99
 64 Wiring
diagram
Terminal PROFIBUS DP Modbus RS485
95 A B
96 B A
99 Not connected C
82 DGND DGND
81 VP VP
LEDs on front of module
LED Identifier Color Description
RJ45 LNK/ACT GN RJ45 is disabled. Ethernet communication is via the BASE2 module
RJ45 10/100 YE
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