Cautions On Use Of Printer; Caution On Printer Setting; Concurrent Use Of Microcomputer And Printer - Mitsubishi Electric F920GOT-K Hardware Manual

GOT-F900 SERIES (CONNECTION)
21.4

Cautions on Use of Printer

When using the GOT-F900 connected to the printer, observe the following cautions on use.
21.4.1

Caution on printer setting

When "PRINTER" is set to "USE" in "SERIAL PORT(RS-232C)" in the GOT-F900, the RS-232C port of
the GOT-F900 is occupied for the printer.
In this status, even if a personal computer is connected and screen data transfer or sequence program
(two-port interface function) transfer/monitoring is executed, the GOT-F900 does not automatically
change to the transfer screen. (And a communication error occurs in the application software installed in
the personal computer.)
1) Avoidance Method
When "PRINTER" is set to "USE", communication error can be avoided by executing an either
operation.
Screen data transfer
Sequence program transfer/monitoring Set "PRINTER" to "DON'T USE", turn off the power, then turn it on again.
2) Priority of the RS-232C Port Functions
From the functions having the highest priority, the system checks whether the setting is provided. If a
certain function is set, functions having lower priority are disabled.
For example, when the PLC connection destination is set to RS-232C or when the bar code reader is
set valid, functions having lower priority (such as screen data transfer and sequence program
transfer/monitoring) are disabled.
Priority
1
2
3
4
5
*1 This function is valid only in CPU direct connection in the FX/A/QnA/Q Series. (This function is valid
also in serial communication connection in the QnA/Q Series.)
When all communications should be valid, set "PRINTER" to "DON'T USE".
However, when the alarm history should be printed in real time at occurrence of alarms, "PRINTER"
should be set to "USE".
21.4.2

Concurrent use of microcomputer and printer

When the microcomputer and the printer are used at the same time, the transmission specifications
(such as the communication speed, the parity and the data length) are shared.
Accordingly, the transmission specifications should be equivalent between the microcomputer and the
printer.
Exchange the connection.
Connected equipment (PLC, general-purpose equipment)
Bar code reader
Printer
Two-port interface function
Screen data transfer mode
Printer
Read and display the "SELECT MODE" screen, then select "OTHER
MODE"-"DATA TRANSFER".
RS-232C function
*1
Connection of Printer 21
Communication
error
Personal computer
21-4