Device description
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D000011142 en k – E65C CU-B1, B2, B4 – User Manual
© Gyr
1 Device
description
1.1 Review
1.1.1 General
view
The communication unit CU-Bx is a unit complete in itself with its own plas-
tic case. It can be fitted in and removed from meters ZxDxxxAT/CT without
opening the calibration seal. The spring-loaded terminals for the external
connections are at the bottom, while plug contacts at the rear provide con-
nection to the meter electronics.
Fig. 1 Communication unit CU-Bx, removed
1.1.2
Purpose of use
The communication unit CU-Bx is used to supplement the ZxDxxxAT/CT
meters. It contains an RS485 and an RS232 interface depending on ver-
sion for remote scanning of the meter and two signal inputs (S0 interfaces)
for connecting external signal transmitters.
The RS485 interface can be used for simple remote reading (e.g. with
several meters). The RS232 interface remains free for local use or serves
for the connection of an external communication device (e.g. modem).
With version CU-Bx/+ the RS232 interface provides additional functions,
such as time-window or initializing of the external modem.
Any other use of the communication unit is considered improper.
1.1.3 Type
designation
The type designation of this communication unit CU-Bx is added to that of
the meter (see meter operating instructions), but is not shown on the main
face plate of the meter. It is specified directly on the case of the communi-
cation unit and can be seen through the front door of the meter through an
opening on the tariff face plate.
The communication unit CU-Bx is available in the following versions:
Version
S01/S02
S1
S2
CU-B1 2
S0
RS232 RS485
CU-B2
RS485 RS485
CU-B4
RS232 RS485
+
-
+
-
23
20
21
22
S01
S02
DC
DC
72 620 548-2
Gyr Dialog CU-B1/+
CON
Rx
Tx
Versions
