Siemens WZU-485E-MOD - Technical Specifications

WZU-485E-MOD Subject to change without prior notice 3
7. Technical data
General information
Communication protocol
Modbus RTU on RS485
Modbus address range
1 – 247
Transmission rate
2400 / 4800 / 9600 / 19200 bps
Communication address
M-Bus primary address of T550
(Loop 4: )
Data refreshing
Parity
Number of stop-bits
Stand-by mode: 60 min
In operation: After every data request, up to 10s
Even / odd / none
1
Default settings
Transmission rate
9600 bps
Modbus Parity
even
Communication address
0 (meter default; must be changed)
RS485 information
HW network connection
RS485: A+, B-, GND
communication signal inputs (A, B) are protected
against short-term (pulse) overload
Bus termination
use external resistor (120 Ohm)
Power supply
Alternating current
permissible range AC 16...28 V
Direct current
permissible range DC 10...32 V
Consumption
<50mA (typically <20 mA / 24 V)
Recommended fuse
fuse T 100 mA
Galvanic Isolation
From the meter
yes
From the RS485 network
no