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Verfügbare Sprachen
Modbus communication connection
SW
ON
1
ModBus connection
Pin N°
1
2
3
4
pH Setpoint reading example:
ADDR
FUNC
0X01
0X03
pH Setpoint writing example:
ADDR
FUNC
0X01
0X06
pH Setpoint applying example:
ADDR
FUNC
0X01
0X06
Remote Start/Stop function: when the system is stopped by remote the display shows Std-By (on all the
screens), following the examples to set start and stop by Modbus.
Remote start example:
ADDR
FUNC
0X01
0X06
Remote stop example:
ADDR
FUNC
0X01
0X06
Default parameter is OFF (off= Start), the system is set ON by Modbus command.
0000137936
(only if present)
SW) Leave the SWITCH on the "1" position. This switch is
intended to improve the communication and to reduce noise in
installations with very long cables (>50m). If you have long cables
and are facing communication problems, you can try to solve the
problem, sliding the IMPEDANCE MATCHING SWITCH to the
"ON" position only for the first and the last device present on the
bus. (i.e. the two devices farther away from each other). Leave
instead the IMPEDANCE MATCHING SWITCH on the "1"
position for all the other intermediate devices along the bus.
Description
T+R+
T-R-
GND
Not used
DATA
DATA
start
start
Addr HI
Addr LO
0X04
0X4C
DATA
DATA
start
start
Addr HI
Addr LO
0X04
0X4C
DATA
DATA
start
start
Addr HI
Addr LO
0X0F
0XA0
DATA
DATA
start
start
Addr HI
Addr LO
0X04
0X6E
DATA
DATA
start
start
Addr HI
Addr LO
0X04
0X6E
DATA
DATA
bit # HI
bit # LO
0X00
DATA
DATA
bit # HI
bit # LO
0X02
0X8A
DATA
DATA
bit # HI
bit # LO
0X00
DATA
DATA
bit # HI
bit # LO
0x00
DATA
DATA
bit # HI
bit # LO
0X00
rev. 6.1
CRC HI
0X01
0X44
CRC HI
0XC9
CRC HI
0X02
0X0B
CRC HI
0X00
0xE9
CRC HI
0X01
0x28
CRC LO
0XED
CRC LO
0XEA
CRC LO
0X3D
CRC LO
0x27
CRC LO
0xE7
7
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