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Model 512 Instruction Manual
PRINTER SETUP
An RS-232C PRINTER port is provided on the rear panel (Figure 2) to accommodate an 80-
column serial printer.
1. Prepare printer for use and connect it to its proper power source, in accordance with the
instruction manual supplied with the printer.
2. Connect printer interface cable (5210791) to the PRINTER connector on the rear panel of
the Model 512.
3. On the printer, turn printer switch ON, and verify that the printer SELECT light is on.
4. Set Model 512 power switch to 1 (on).
5. Refer to Set Printer Baud Rate in the Sub-Menu Functions section of this manual and set
the baud rate for 1200.
6. Test the printer by pressing ERROR LIST on the Model 512.
Data Format
If the printer was not provided by Cablescan, the following setup data are required:
Transmission to the printer is at 1200 Baud, with 8 data bits, 1 stop bit, and no parity.
Printer Cable
The printer connector on the Model 512 is also used for external control signals that are not
printer related. Therefore, a fully loaded 25-pin printer cable should not be used. The pin
assignments for the printer are as follows:
Description
Receive Data
Signal Ground
Supervisory
Send Data
Pin #11 is used to indicate when the printer is ready to receive data. In Okidata
printers, the signal name is "Supervisory Send Data"; it may also be referred to
as "Printer Busy." The printer sets this signal HIGH to indicate the print
buffer is full and to stop sending data. A different pin number and signal must
be substituted for printers without this signal. Also, the polarity of the signal
must be correct (busy when HIGH) or selectable by an internal switch in the
printer.
Printer Troubleshooting
Perform the following steps if the printer does not print after being set up according to the above
procedure.
Tester
Symbol
25-Pin 'D'
RD
SG
SSG
(Printer Cable P/N 5210791)
NOTE
25-Pin 'D'
3
7
11
Page 69
Printer
3
7
11
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