-- Supply network analyzer CVM-144 (HAR) ----- User's manual --- Page No. 45
11.- CVM-144 COMMUNICATIONS
----
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.
