SAMWONTECH
1st Edition of TEMP880S IM : Sep. 21. 2005 Page 81 / 101
4.3 Communication Command
4.3.1 Composition of Communication Command
▶ The basic style of Communication Command which transmits a message to TEMP880S from a superior
▶ rank of Communication equipment.
☞ MULTIDROP is possible up to the number of 99 in case of SLAVE(TEMP880S).
☞ Make sure to connect the vertical section resistance (200Ω 1/4W) in case of the TEMP880S or
☞ MASTER(PC, PLC etc.)
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2
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3
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4
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5
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6
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7
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8
S
T
X
ADDRESS COMMAND
,
Date followed by the rule
of COMMAND
SUM
C
R
L
F
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1 Beginning letter of Communication Command
Indicate the beginning of Communication Command having a code value (0x02) with a STX (Start of
Text), which is a letter of Ascii.
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2 ADDRESS
Indicate the ADDRESS which is a number of TEMP880S that you intend to communicate with.
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3 COMMAND
COMMAND for Communication (refer to 4.3.2~4.3.9).
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4 Divider
Indicate the Divider which separates the Command and Data by comma (',').
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5 Data part
Indicate the letter line which has a regular form of a letter line followed the Communication Command
Rule
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6 Check Sum
Indicate the inferior rank of 2-byte to D by adding all letters from the letter of after STX to the letter
before SUM using the Ascii code and Use only when the protocol of TEMP880S is “the basic protocol of
“PCL!” + Check Sum”
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7,
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8 Vertical Section letter
Indicate the end of Communication Command as CR(0x0D), LF(0x0A) by using the Ascii code.
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