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APPENDIX
4 DTR OUT
2) X-ON/X-OFF mode
Indicates whether or not the printer can receive data from the host.
This signal is a space, except in the following cases.
1. After reset until communication is possible
2. During test printing
5 SG — Signal ground
6 DSR IN Signal line that indicates if the host computer can receive data.
SPACE: host can receive
MARK: host cannot receive
In the X-ON/X-OFF or Star mode, the status of this signal is not confirmed.
• The status of this signal is not confirmed.
This signal can be specified as an internal reset signal using Switch 7 of DIP Switch 1
(page 156). MARK of 1ms or longer activates the reset.
7 RTS OUT Same as DTR (Pin 4).
8 INIT IN This signal can be specified as an internal reset signal using Switch 8 of DIP Switch 1
(page 156). SPACE of 1ms or longer activates the reset.
9 N/C — Not connected
Pin
No.
Signal
Name
Direction Function
Printer Status
Memory SW #4-4
10
1. From when the power is turned on or I/F
reset until communication possible
BUSY BUSY
2. Test printing BUSY BUSY
3. Paper feed by paper feed switch — BUSY
4. Stop due to no paper — BUSY
5. During waiting for switch input in macro
execution
— BUSY
6. Other errors — BUSY
7. Receiving buffer full BUSY BUSY
