B/C
― ― ― ―
― ― Y2 Y1
Example
Binary 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1
Hexa-
decimal
on the
LED
monitor
– : No corresponding control circuit terminal exists.
* (XF), (XR), and (RST) are assigned for communications control. Refer to “ Displaying control I/O signal
terminals under communications control” given below.
■ Displaying control I/O signal terminals under communications control
Under communications control, input commands (function code S06) sent via RS-485 or other optional
communications can be displayed in two ways: “with ON/OFF of each LED segment” and “in hexadecimal.” The
content to be displayed is basically the same as that for the control I/O signal terminal status display; however, (XF),
(XR), and (RST) are added as inputs. Note that under communications control, the I/O display is in normal logic
(using the original signals not inverted)
For details about input commands sent through the communications link, refer to the “RS-485 Communication
User's Manual” or the instruction manual of communication-related options as well.
■ Displaying control I/O signal terminals on optional digital input and output interface cards
The LED monitor can also show the signal status of the terminals on the optional digital input and output interface
cards, same as the signal status of the control circuit terminals.
Table 3.4-11 lists the assignment of digital I/O signals to the LED segments.
Table 3.4-11 Display of I/O Signal Status with ON/OFF of each LED segment
(Digital input and output interface cards)
Segment LED4 LED3 LED2 LED1
a ― O1 I9 I1
b ― O2 I10 I2
c ― O3 I11 I3
d ― O4 I12 I4
e ― O5 I13 I5
f ― O6 ― I6
g ― O7 ― I7
dp ― O8 ― I8
LED No. LED4 LED3 LED2 LED1
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Input terminal - - - I13 I12 I11 I10 I9 I8 I7 I6 I5 I4 I3 I2 I1
Output terminal - - - - - - - - O8 O7 O6 O5 O4
O3 O2 O1
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