Star Micronics SCP700 - Manual (Page 169)

165
APPENDIX
Optional serial interface pins and signal names
Pin
No.
Signal
Name
Direction Function
1 FG — Frame Ground
2 TXD OUT Transmission data
3 RXD IN Receive data
4 DTR OUT 1 Star mode or slip TM-295 mode
Indicates whether or not the printer can receive data from the host.
1) DTR mode
When the printer is ready to receive data, this signal changes to a space.
2) X-ON/X-OFF mode
This signal is a space, except in the following cases.
1. After reset until communication is possible
2. During test printing
2 Receipt TM-T85 mode
1) DTR/DSR mode
Indicates if the printer is busy or not.
Space: Printer ready
Mark: Printer busy
The conditions for busy will vary according to the memory switch settings.
13
25
1
14
Printer Status
Memory SW #4-4
1 0
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