Dwyer SCD - Manual (Page 9)

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6. Address and Content of Bit Register: (First bit of reading will put into LSB, Write data = FF00H for bit set,
0000H for bit data as “0”)
0811H
Temperature unit display
selection
0:
o
F, 1:
o
C (default)
0813H AT setting
AT setting OFF: 0 (default), AT setting
ON: 1
0814H Control RUN/STOP setting 0: STOP, 1: Execute (default)
0815H Program hold flag 1: Program temporary stop
0816H Program stop flag 1: Program stop
7. Communication format: 01: read bit data, 05: write bit data, 03: read word, 06: write word.
ASCII Mode:
To Read Instruction
To Read Response
Message
To Write Instruction
To Write Response
Message
Starting word ’：’ ’：’ Starting word ’：’ ’：’ Starting word ’：’ ’：’ Starting word ’：’ ’：’
Machine address 1 ‘0’ ‘0’
Machine
address 1
‘0’ ‘0’
Machine
address 1
‘0’ ‘0’
Machine
address 1
‘0’ ‘0’
Machine address 0 ‘1’ ‘1’
Machine
address 0
‘1’ ‘1’
Machine
address 0
‘1’ ‘1’
Machine
address 0
‘1’ ‘1’
Instruction 1 ‘0’ ‘0’ Instruction 1 ‘0’ ‘0’ Instruction 1 ‘0’ ‘0’ Instruction 1 ‘0’ ‘0’
Instruction 0 ‘3’ ‘1’ Instruction 0 ‘3’ ‘1’ Instruction 0 ‘6’ ‘5’ Instruction 0 ‘6’ ‘5’
‘1’ ‘0’ ‘0’ ‘0’ ‘1’ ‘0’ ‘1’ ‘0’
‘0’ ‘8’
Response data
length (byte) ‘4’ ‘2’ ‘0’ ‘8’ ‘0’ ‘8’
‘0’ ‘1’ ‘0’ ‘1’ ‘0’ ‘1’ ‘0’ ‘1’
To read data/Staring
word address
‘0’ ‘0’ ‘1’ ‘7’
To write data
address
‘1’ ‘0’
To write data
address
‘1’ ‘0’
‘0’ ‘0’ ‘F’ ‘0’ ‘0’ ‘F’ ‘0’ ‘F’
‘0’ ‘0’
Data content of
1000H/081xH
‘4’ ‘1’ ‘3’ ‘F’ ‘3’ ‘F’
‘0’ ‘0’ ‘0’ ‘E’ ‘0’ ‘E’ ‘0’
To read data
length/Word length
(word/bit)
‘2’ ‘9’ ‘0’
To write data
content
‘8’ ‘0’
To write data
content
‘8’ ‘0’
LRC1 check ‘E’ ‘D’ ‘0’ LRC1 ‘F’ ‘E’ LRC1 ‘F’ ‘E’
LRC 0 check ‘A’ ‘D’
Data content of
1001H
‘0’ LRC 0 ‘D’ ‘3’ LRC 0 ‘D’ ‘3’
Ending word 1
CR CR
LRC1 check
‘0’ ‘E’
Ending word 1
CR CR
Ending word
1
CR CR
Ending word 0
LF LF
LRC 0 check
‘3’ ‘4’
Ending word 0
LF LF
Ending word
0
LF LF
Ending word 1 CR CR
Ending word 0 LF LF
LRC Check:
LRC check is the sum added up from “Machine Address” to “Data content”. For example, 01H + 03H + 10H+ 00H +
00H + 02H = 16H, and obtain the complementary of 2 as EA.