Tsuruga 471C, Quick Manual, Page: 46 / 52

4
Communication command (RS-232C, RS-485 common)
!
Caution
About the command when power in turned ON,

When the power is turned ON, supply power should rise up to the rated
voltage within 1 second.

There have been some cases of not being able to response the command
even 3 seconds after the power supply reached the rated voltage
because of initialization of 471C. As there may be cases of responding
undefined data too, it is highly advised to communicate only after it has
reached to rated voltage more than 3 seconds.
Instructions about the comment

If there is BCC function, BCC is added after the ETX
The results obtained by calculating the exclusive OR from immediately after STX value to
EXT (EXT included), are added after the ETX.

Configuration of frame
Command frame ：
＋ ＋ ＋ ＋
Response frame ：
＋ ＋ ＋ ＋ ＋

Only first 4 characters of the command letters will be valid.
Example ） “ RMREAD ” → “ RMRE ”

Setting items represented either by numbers or characters will be valid.
Example ） “ WC52 0 ” or “ WC52 OFF ”

Number setting
Set a value that does not include the decimal point of the display. （ display cycle , cut-off
time , comparison value, analog output full scale ）

Exit code ： Returns to reception status of the command frame
Exit code Contents
A （ 41H ） Normal end
B （ 42H ） Under setting （ In case of communication during setting ）
C （ 43H ） Setting error （ Out of setting range or error ）
D （ 44H ） BCC error （ If BCC function is available ）
P （ 50H ） Command error （ When the received command becomes unable to analyze ）
Command
Device No.
STX
ETX (BCC)
Exit code
Device No.
STX
ETX
(BCC)
Response