175
APPX
A
Appendix
1 Det
ails of
Rem
ot
e I
/O
S
ignals
Appendix
1.
1 Rem
ot
e
input
signals
(8) External power supply READY flag
This signal indicates the state of the external power supply of the extension D/A converter module.
(a) Behavior when the external power supply of the extension D/A converter module is
in an off state
External power supply READY flag (RX2F) remains off, and the RUN LED of the extension D/A converter
module flashes.
D/A conversion processing of the extension D/A converter module is not performed.
(b) Behavior when the external power supply of the extension D/A converter module is
turned on from off
Turning on the external power supply from off results in External power supply READY flag (RX2F) turning on
and the RUN LED of the extension D/A converter module lighting up. D/A conversion processing starts for the
conversion-enabled channels in the extension D/A converter module.
(c) Behavior when the external power supply of the extension D/A converter module is
turned off from on
Turning off the external power supply of the extension D/A converter module from on results in External power
supply READY flag (RX2F) turning off and the RUN LED of the extension D/A converter module flashing.
D/A conversion processing of the extension D/A converter module stops.
(d) Device number
The device number of this input signal is as follows:
• D/A conversion processing of the main D/A converter module can be performed regardless of the on/off state of
the external power supply of the extension D/A converter module.
• Use an external power supply that satisfies the specifications described in the performance specifications (
Page 26, Section 3.2.2). If it does not meet the specifications, External power supply READY flag (RX2F) remains
off.
• When the extension D/A converter module is used, use the signal as an interlock condition.
Signal name
Main D/A converter module
Extension D/A converter module
External power supply READY flag
RX2F
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Module power supply
Remote READY (RXB)
External power supply
External power supply READY flag
(RX2F)
D/A conversion processing
is not performed.
D/A conversion processing
is performed.