Unit 6: Bi-Directional Communications
SATO GL4xxe SBPL Programming Reference Page 6-2
INTRODUCTION
Bi-Directional communications is a two-way communications protocol between the host and the
printer enabling the host to monitor and control the printer’s operational status. The Bi-Com 5
protocol only works in the Multi-Job Buffer mode.
GENERAL CONFIGURATION
Refer to Appendix: Reference Table 40 for printer configuration commands.
SERIAL INTERFACE
For this protocol to function properly with an RS232C Interface, pin 4 (DTR) and pin 8 (CTS)
must be held high by the host. To ensure these pins are always in the correct state is to tie pin 4
(DTR) to pin 6 (DSR) and pin 7 (RTS) to pin 8 (CTS) at the printer end on the cable.
RECEIVE BUFFER
This protocol controls information such as reception, print, and cancellation for every item. When
the buffer is near full, an error will occur informing the host that either there is not enough
memory remaining or that the item quantity has been exhausted.
To release the receive buffer one of those conditions must be remedied.
DATA TRANSMISSION
Data transmissions must be preceded with STX (HEX 02H) and be followed by ETX (HEX 03H)
to function.The string must also include the item number or an error will occur. An error will also
occur if an incorrect item number is identified. BCC must follow <ESC>Z if the BCC function is
enabled.
Print Data
<STX><ESC>A<ESC>{ID 00000}{Print Data}<ESC>Z<ESC>BCC<ETX>
Status Request
<STX>SOH{ENQ}00000<ETX>
To Next Page
Loading...
Need help?
General
