SATO D508 Service Manual download pdf (Page 220)

Unit 6: Bi-Directional Communications

E/Pro Programming Reference

6-2 PN: 9001096E

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 6 (DTR) and pin 5 (CTS) must be held high by

the host. To ensure these pins are always in the correct state is to tie pin 20 (DTR) to pin 6 (DSR) and pin 4 (RTS)

to pin 5 (CTS) at the printer end on the cable.

RECEIVE BUFFER

This protocol controls information such as reception, print, and cancelation 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 identiifed. 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

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SATO D508 Service Manual Page 220