Citizen Systems CBM-230/231 - Manual (Page 46)

CBM-230/231 User’s Manual
CITIZEN 46
(25) Transmitting the status of Peripheral Equipment (ESC u n)
Code : [1B]h + [75]h + n
* {n = 0}
Current status of connector pin No.3 is transmitted.
l "n" means the followings.
n (Hex) Condition
0 Drawer Kick Connector No. 3
l Status transmitted consists of 1 byte whose content is as in the table below.
l Any equipment has not been connected to this connector, Bit 0 of n is always "1".
l In DTR/DSR control, after receptible state of the host (DSR signal being in SPACE state) is
confirmed, only 1 byte is transmitted. Further, in XON/ XOFF control, DSR signal state
not being confirmed, only 1 byte is transmitted.
l In DTR/DSR control, when the host is unreceptible state (DSR signal being in MARK state),
it keeps waiting until receptible state is created.
VALUE
BIT FUNCTION 0 1
0 Level of pin No. 3 “L” “H”
1 Undefined
2 Undefined
3 Undefined
4 Unused Fixed to 0 -
5 Undefined
6 Undefined
7 Undefined
Remarks This command is valid only for serial interface model.