Appendix 6 Universal Serial Communications App6-41
The switch number is written in the following way in write areas n + 3 and n + 4.
When the MONITOUCH is connected to the host in a 1 : 1 connection, interrupt occurs as is shown
below.
* For RS-422 (485) 2-wire connection, interrupts cannot be used.
NAK
Error Codes
01H: The V series is currently engaged in display processing.
The received command is on standby due to display processing.
Wait a few moments and re-transmit the command.
02H: Overrun/Framing error
An overrun or framing error is detected in the received data.
Send the command again.
03H: Parity error
A parity error is detected in the received data.
Send the command again.
04H: Sum check error
A sum error occurs with the received data.
05H: Address error
The address specified by the memory read/write command is incorrect.
Check the address or counter and re-transmit the command.
06H: Count error
The memory read/write count is “0.”
07H: Screen error
The data to be written in read area n + 2 (screen status command), as specified by a write
command, is not registered on the screen.
Check the screen number and re-transmit the data.
08H: Format error
The number of DLEs is 0 or greater than 6.
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
0000000
n + 3, n + 4 (SW0/SW1)
Switch number
Switch status
0: OFF
1: ON
HL
00
SW0 SW1 ENT0 ENT1 ENT2
WORD WORD WORD WORD WORD WORD
When a regular key is pressed
V series side
Screen No.
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