
18
CARLO GAVAZZI
CONTROLS
SERIAL COMMUNICATION PROTOCOL
WM4-96
V1 R3
Page
Request frame: R1 = OFF and R2 = OFF (8 byte):
01h
06h
08h
D8h
01h
01h
CRC
CRC
Answer frame (8 byte):
01h
06h
08h
D8h
01h
01h
CRC
CRC
NOTE: a digital output can be used as remote control output only if the relevant “digital output type”
variable stored in EEPROM is correctly set (see paragraph 3.1.19).
2.12 FORMAT OF THE “PRESENT MODULES+DIGITAL INPUT STATUS” WORD
ADDRESS BYTE Code Variable type
800 2 XXXXXXXXXXXXXXXX Module
Code
Bit15 Bit14 Bit13 Bit12
Bit11
Bit10
Bit9 Bit8 Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
Gas F1 kvarh+ kWh+
S3A S4A S2A 232 CLK 485 F2 Water
Serial output
485 RS485 module
0 Not present
1 Present
232 RS232 module
0 Not present
1 Present
CLK RTC Clock
0 Not present
1 Present
Digital output code
S3A S4A S2A Available digital outputs on the inserted modules
0 0 0 1,2,3,4
0 0 1 1,2,3,4
0 1 0 1,2,3,4
0 1 1 1,2
1 0 0 3,4
1 0 1 3,4
1 1 0 1,2,3,4
1 1 1 None
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