Citizen CBM-231 User Manual page 47

(25) Transmitting the status of the peripheral device (ESC u n)
Code : [1B]h + [75]h + n
* {n = 0}
Transmits the current status of connector pin No.3.
"n" has the following meanings.
n (Hex)
0
The transmitted status is of 1 byte and its contents are shown in the table below.
When nothing is connected to the connector, The bit 0 of "n" is always "1".
In case of DTR/DSR control, only one byte is transmitted after confirming that the host is ready to
receive (DSR signal is in Space mode). In case of XON/ XOFF control, only one byte is transmitted
without confirming the state of the DSR signal.
In case of DTR/DSR control, if the host is not ready to receive (DSR signal is in the Mark mode), it
waits to get ready to receive.
Bit
0
1
2
3
4
5
6
7
Serial interface only
Type
Drawer kick connector No. 3
Function
No. 3 pin's level
Undefined
Undefined
Undefined
Unused
Undefined
Undefined
Undefined
Value
0
"L"
Fixed to 0
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CBM-230/231 User's Manual
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