Gb 3. specifications – WIKA DI25 Benutzerhandbuch
Seite 12
12
WIKA operating instructions digital indicator, model DI25
14076218.01 12/2013 GB/D
GB
3. Specifications
Serial interface [C5]
The following operations can be executed from an external computer:
■
Reading and setting up of the different setting values
■
Reading the measured value and the switching status
■
Changes of functions
Interface:
based on EIA RS-485
Communication method:
Half-duplex communication, start/stop , synchronous
Transmission rate:
2,400, 4,800, 9,600, 19,200 bps
Parity:
even, odd, no parity
Stop bit:
1, 2
Transmission protocol:
WIKA protocol, MODBUS
RTU, MODBUS
ASCII
Number of connectable
instruments:
max. 31 digital indicators per computer
Detection of transmission
errors:
double error detection by parity and check sum
Transmission protocol
WIKA protocol
MODBUS
ASCII
MODBUS
RTU
Start bit
1
1
1
Data bit
7
7
8
Parity
even
Adjustable (even)
Adjustable (none)
Stop bit
1
Adjustable (1)
Adjustable (1)
The data bit is automatically set up via the choice of the transmission protocol.
Transmitter power supply [P24]
Output voltage:
DC 24 V ± 3 V (with load current 30 mA)
Ripple voltage:
< 200 mV (with load current 30 mA)
Maximum load current: 30 mA
Terminal cover [K]
Screw-on cover of the connection terminals for preventing electric shocks.