Circutor CVM-NRG96 - RS485 Bus Connection

CVM-NRG96
Mn_cvm-nrg_03.doc
Connection for the RS485 BUS
The composition of the RS-485 cabling must be carried out with a meshed
screen cable (minimum 3 wire) with a maximum distance of 1,200 metres
between the CVM-NRG96 and the master unit. This Bus may connect a
maximum of 32 CVM-NRG96 analyzers.
A1
A2
5
1
2
B ( - )
A
( + )
C GND
5
1
2
7
5
2
3
5
7
3
2
RS-485
RS-232
CONVERTIDOR
DB-9
RS-232 / RS-485
PC
CVM-NRG 96
For communication with the master unit, the RS-232 to RS-485 System Protocol
Intelligent Converter has to be used (M54020 Intelligent Converter). This
converter does not require the 7 Pin connection in the RS232 part.
RS-232 / RS-485
CONVERTER