GF Signet 4150 Turbidimeter - Manual (Page 13)

13 Signet 4150 Turbidimeter
Valid Addresses
0001–00XXX
Input Status
These single-bit values are readable from the master. The data
will be returned with the lowest addressed input status in the LSB
of the data. Unused bits in the data will be set to 0.
Code Name Broadcast
0x01 Read Coil Status No
0X05 Force Single Coil Yes
Valid Command(s)
MSB LSB
Bit
15 Bit
14 Bit
13 Bit
12 Bit
11
Bit
10 Bit
9
Bit
8
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
Format
16-bit word format
Address Function Default
00001 Offset added False
00002 Flow alarm selected False
00003 Access code enabled False
00004 Ultrasonic cleaning enabled (if available) True
00005 Desiccant set as error (True) or warnings (False) True
De¿ nitions
Code Name Broadcast
0x02 Read Input Status No
Valid Command(s)
MSB LSB
Bit
15 Bit
14 Bit
13 Bit
12 Bit
11
Bit
10 Bit
9
Bit
8
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
Format
16-bit word format
Valid Addresses
10001–10XXX
Address Function
10001 Instrument error
10002 Alarm 1 active
10003 Alarm 2 active
10004 Calibration error
10005 Desiccant error
De¿ nitions
Coils
These single-bit values are readable and changeable from the
master. The data will be returned with the lowest addressed coil in
the LSB of the data. Unused bits in the data will be set to 0.
True is 1 and False is 0.
Modbus RS-485 Output and Commands
If the connection is to the master on a RS-232 serial port, an RS-232 to RS-485 converter is required. If the connection to the master is
USB, an RS-485 to USB converter is required.