CIRCUTOR CVM144 Series - Manual (Page 46)

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 45
11.- CVM-144 COMMUNICATIONS
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One or some CVM-144... can be connected to a P.C.. With this system we
can get all the parameters in one central point of reading. The CVM-144..., has a
serial RS-485 or RS-232 type output (according to the model). If we connect more
than one device to the same communication line (RS-485), we have to assign to
each of them a different code or direction (from 01 to 255), since the P.C. needs the
identification of every measuring point.
11.1.- To take into account
!
:
- PROTOCOL: MODBUS © (Question / Answer)
- CVM-144 DEFAULT CONFIGURATION : 001 / 9.600 / 8 bits / N / 1 bit
- Available baud rates: 1.200 - 2.400 - 4.800 - 9.600 - 19.200 bauds
- RS-485 type output:
-RS-485 connection will be carried out by means of a twisted and
screened cable, with a minimum of 3 wires, with a maximum distance
between the CVM-144 and the last peripheral of 1.200 m. The CVM-144 uses
a RS-485 communication bus allowing up to a maximum of 32 devices in
parallel (Multi-point bus) per port used in the PC.
- RS-232 type output:
-RS-232 connection will be carried out by means of a twisted and
screened cable, with a minimum of 3 wires, with a maximum distance
between the CVM-144 and the P.C. of 15 m.