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4.5 Description of codes
■ Codes below from ①STX, ②Address .･･･ ⑩Error type are expressed in ASCII codes.
■ For ASCII codes, see "8.ASCII code list" on page 51.
■ For conversion to ASCII codes, see "5.Communication example" on page 46.
① STX
This code is necessary for the receiving side to detect the beginning of a message. This is
prefixed to the beginning of the character string to be transmitted.
② Address
This is the address of the counterpart (the Unit) for communication with a host PC. The
address within a reply message from the Unit indicates the transmission source of the reply
message.
③ Request
Indicate R or W symbol.
R：When data is read out from the Unit
W：When data is written into the Unit or stored in the Unit.
④ Identifier
This is a classification symbol (identifier) for data to be read out or written and is expressed
in a three-digit ASCII code. See "7. Identifier／command list" on page 49.
⑤ Numeric data
This is data to be read out or written all of which are expressed in a five-digit number
irrespective of their type.
Minus data：The "－" symbol is indicated at the first digit.
Decimal point position ：A five-digit data does not contain a decimal point.
Example) Five-digit numeric data ００１０１ has the following meanings:
Set temp. (SV1)
Set time (TIM)
⑥ ETX
This is a code necessary for the receiving side to detect the end of a message. This is
suffixed to the end of a character string to be transmitted. (Excluding BCC)
4. Operating procedures
Option (RS485 communication function)
Example
When temp. sensor is a thermocouple
When temp. sensor is of platinum
44
Meaning
→ 101℃
→ 10.1℃
→ 1 hr 1min
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