MTE HYDROCAL 1001 Plus - Page 74

HYDROCAL 1001+ Installation and operation manual Page 72/76
MODBUS
Function
Code
MODBUS
Address
Dec / Hex
Register
Address
1)
(5 Digit Dec)
HYDROCAL
0x06
Write
Single
Register
0 / 0
...
1 / 1
40001
...
40002
Holding Register
Test register #1, #2
To test the write functionality there are 2 registers
that may be modified freely. (The reset initializa-
tion values of the two registers are 0xA5A5 and
0x5A5A.)
0x06
Write
Single
Register
1000 / 3E8
41001
Confirmation / Reset of alarms
Alarm status #4 ... #1
The alarms are coded as a bit field and are pre-
sented as a single MODBUS register
(Alarm #4 -> 0x0008, alarm #1 -> 0x0001).
By writing a '0'-Bit at the corresponding position a
probably active alarm can be reset. Writing '0000'
resets all alarms.
0x06
Write
Single
Register
2000 / 7D0
42001
Switch MODBUS protocol off
MODBUS off
It is now possible to switch the MODBUS protocol
off via MODBUS. This is done by writing 0x00FF
(like OFF).
0x03
Read
Holding
Register
0 / 0
...
1 / 1
1000 / 3E8
2000 / 7D0
40001
...
40002
41001
42001
Holding registers
16-Bit test register #1, #2
Alarm status bit pattern #4 ... #1
MODBUS protocol status
Note: The reading is always 0x0000. If the
MODBUS status is OFF, it is not possible to read
this status via MODBUS.
1)
Modicon® PLC address schematic
Currently the following assignment of sensor numbers (SNSR) applies:
1 Gas sensor
2 ... 4 - reserved -
5 Temperature sensor ϑ1 (T1 gas temperature measurement unit)
6 Temperature sensor ϑ2 (T2 oil temperature oil unit)
7 Moisture in Oil sensor
8 - reserved -
9 Gas sensor daily trend
10 ... 12 - reserved -
13 Gas sensor weekly trend
14 ... 16 - reserved -
Note: Function, Register and Address Mapping is also valid for MODBUS serial.