Mitsubishi Electric MELDAS C6 Interface Manual page 166

B con-
Signal name
tact
—
DIO CARD INFORMATION
[Function]
The remote I/O unit connected to the controller can be found with the user PLC.
The user PLC finds the connection state of the remote I/O unit with this data.
[Operation]
(1) When a remote I/O card is connected "1" is set, and when not connected "0" is set. Note that for
DX100/101, DX110/111, DX120/121 and DX140/141, two cards are used per unit, so the two
bits corresponding to the connected unit will be set to "1".
File register
F E D C B A
(R)
(2) No. of cards mounted in remote I/O unit (DX***)
DX110/111, DX120/121, DX140/141
(3) The position of the bit that turns ON depends on the rotary switch on the remote I/O unit.
6. EXPLANATION OF INTERFACE SIGNALS
6.2 PLC Input Signals (Data Type: R***)
Signal
abbreviation
9 8 7
Unit
DX100/101
1st system
R22
6 5 4 3 2 1
No. of cards
One-card unit
Two-card unit
6-2-6
2nd system 3rd system
— —
0
Bit
1st card
2nd card
:
Channel 1
:
:
8th card
1st card
2nd card
:
Channel 2
:
:
8th card