Explanation Of Interface Signals - Mitsubishi Electric MELDAS C6 Interface Manual

6. EXPLANATION OF INTERFACE SIGNALS

The signals are explained in order of the tables of input/output signals with the controller as shown
below.
6.1 PLC input signals (bit type: X***)
6.2 PLC input signals (data type: R***)
6.3 PLC output signals (bit type: Y***)
6.4 PLC output signals (data type: R***)
6.5 Special relay/register signals (SM**, SD**)
6.6 Signals related to communication
How to read the signals
B con-
Signal name
tact
PLC AXIS NEAR POINT
*
DETECT nTH AXIS
Indicates (B contact) signal that is valid when PLC -> controller signal is OFF.
B con-
Signal name
tact
—
AXIS SELECT OUTPUT
6. EXPLANATION OF INTERFACE SIGNALS
Signal
abbreviation
*PCDn
Device No. for 1st part system
Signal
abbreviation
AX1~AX14
Device No. for 1st axis
6-1-1
1st system 2nd system
Y438~43E
Device No. for 3rd part system
Device No. for 2nd part system
— indicates that there is no corresponding device.
Refer to the list for device Nos. of 4th part system and
following.
1st axis 2nd axis
X441 X461
Device No. for 2nd axis
— indicates that there is no corresponding device.
Refer to the list for device Nos. of 4th axis and
following.
3rd system
— —
3rd axis
X481
Device No. for 3rd axis