Serial Interface; Engine Interface - Kyocera Mita FS-6750 Service Manual

Operation theory
Logic controller system

Serial interface

The printer incorporates a port for the serial interface card (IB-10E). The serial
interface is provided only for Korea as standard, not provided for Taiwan. The
serial interface controller is included within the gate array and supports both the
RS-232C and RS-422A protocols. Since the RS-232C support is designed to be com-
patible with SNMP (Simple Network Management Protocol), CTS and DSR signals
are included. Switching to either mode is toggled by changing a jumper wire
arrangement on IB-10E. A 25-pin D-sub connector is used for the serial port. The
RS-422A extra signal lines are assigned to some of the vacant RS-232C terminals.
(See Appendix A for the interface later in this manual for details.)
The serial interface has the following features:
Table 4. 9 Serial interface
Connector type
Baud rates/sec.
Modes

Engine interface

The interface to the engine system is based on the serial interface.
The engine board is detachable from the printer at its interface connector. The
engine interface connector has the following pin assisngments:
Engine interface connector assignment is as follows ("*" means negative-logic.):
Table 4. 10 Engine interface connector assignment—
Pin No.
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
FS-6750
25-pin, D-sub
300/600/1200/2400/4800/9600/19200/38400/57600/115200
RS-232C/RS-422A (switchable)
Terminal Signal
GND GND
5 V 5 V
SI SI
SCLK SCLK
SBSY SBSY
SO SO
GND GND
GND GND
GND GND
GND GND
FPDIR FPDIR
3.3 V 3.3 V
GND GND
4-37
Pin No. Terminal
B1 5 V 5 V
B2 5 V 5 V
B3 SDIR SDIR
B4 ENGIR ENGIR*
B5 VDFON VDFON
B6 RESET RSTIN
B7 PDOUT BD
B8 GND GND
B9 VDATAP VDOUTP
B10 VDATAN VDOUTN
B11 GND GND
B12 FPCLK FPCLK
B13 FPDAT FPDAT
Signal