Note:
① If temperature controller measures 3-way, the initial address 0x0003 is retention
address.
② Actual temperature in each phase is equal to the temperature data in each phase divided
by 10.
③ Analysis of special temperature data:
Note: Each output bit status: 0 stands for no action contact
1 stands for action contact
18
·When temperature controller measures 3-way:
Where: Bit 7 stands for door contact input bit
Bit 6 stands for(humidity)heater output bit
Bit 5 stands for fan fault alarm output bit
Bit 3 stands for fault alarm output bit
Bit 2 stands for over-temperature alarm output bit
Bit 1 stands for over-temperature tripping output bit
Bit 0 stands for fan control output bit
·When temperature controller measures 4-way:
Where: Bit 7 stands for door contact input bit
Bit 6 stands for(humidity)heater output bit
Bit 5 stands for fan fault alarm output bit
Bit 4 stands for fault alarm output bit
Bit3 stands for iron core over-temp alarm output bit or transformer
room fan control output bit
Bit 2 stands for over-temperature alarm output bit
Bit 1 stands for over-temperature tripping output bit
Bit 0 stands for fan control output bit
b. Definition of relay output register address (function code 0x04):
Definition of data low 8-bit:
bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
Initial address Description Data type
Register address
corresponding to some
equipment
0x0000
Relay output data Int16
30001
When the upper computer sends the function code 0x03 to read the temperature data, it
needs to judge the received data. If the values for temperature data are just as those shown
in the table below, it indicates temperature controller is faulty and temperature value should
not be calculated.
Temperature data
Status of temperature
controller
Description
0x7000 -OP- Open-circuit
0x6000 -OH- Out of upper limit
0x8000 -OL- Out of lower limit
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