Connection To Parallel Port - Citizen BD2-2220 Specifications

5) Reverse Mode (Nibble/Byte) mode allows status to be transmitted from the printer.
(Using GS a, DLE EOT n, GS r, of GS I command)
・The transmitting buffer of the printer is 99 bytes. The host must transfer to Reverse
Mode to prevent loss of status. Being in the Reverse Idle state is desired when using
ASB. If this is not possible, always monitor the presence or absence of the transmitting
data from the printer.
together (OR) with the latest status.
・Identification of information on each status is available.

6.1.3 Connection to Parallel Port

1) Connection to 36-pin/25-pin parallel port
36-pin
Parallel interface
CN1
2) Connection to other parallel port
To connect to the connector other than the above, verify the status of various signals and
connect properly.
The ASB not transmitted but accumulated is transmitted
Identification of Status
Command, Code
GS I
GS r
XON
XOFF
DLE EOT
ASB (1st byte)
ASB (2nd byte)
Status
＜0**0****＞B
＜0**0****＞B
＜00010001＞B
＜00010011＞B
＜0**1**10＞B
＜0**1**00＞B
＜0**0****＞B
25-pin
Parallel interface
CN1
32