
17
3 Functions
The following functions are available for the instrument:
3.1 Read n words
This function reads n (n
≤
32) words, starting from a defined address.
Data request
Response
Example
Read the 1st measurement (temperature of the cold store)
Modbus address of 1st measurement = 0x0064 = 100dec
Data request:
Response:
Function number
Function
0x03 or 0x04
read n words
0x06
write one word
0x10
write n words
Slave
address
Function
0x03 or 0x04
Address
first word
Word
number
(max. 32)
Checksum
CRC16
1 byte
1 byte
2 bytes
2 bytes
2 bytes
Slave
address
Function
0x03 or 0x04
Number
of bytes
read
Word
value(s)
Checksum
CRC16
1 byte
1 byte
1 byte
x byte(s)
2 bytes
01
03
00 64
00
02
85D4
01
03
04
85
BC
C1
B8
4339
Measurement 1
= -23.065
CRC
Содержание 701061
Страница 2: ......
Страница 16: ...2 Protokollbeschreibung 16...
Страница 29: ...Type 701061 Electronic Refrigeration Controller B 70 1061 2 Interface Description 08 07 Type 701061 XXX 32 XXX...
Страница 30: ......
Страница 44: ...2 Protocol description 16...
Страница 58: ......
Страница 72: ...2 Description du protocole 16...