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I Displaying I/O signal status in hexadecimal format
Each I/O terminal is assigned to bit 15 through bit 0 as listed in Table 3.12. An unassigned bit is
interpreted as "0." Allocated bit data is displayed on the LED monitor in 4-digit hexadecimals ("0" to
"F" each).
With the FRENIC-Mini, digital input terminals [FWD] and [REV] are assigned to bit 0 and bit 1,
respectively. Terminals [X1] through [X3] are assigned to bits 2 through 4. The value "1" is set for
each bit when the assigned input terminal is short-circuited with terminal [CM]. The value "0" when
it opens. For example, when [FWD] and [X1] are on and all others are off, the display on LED4 to
LED1 would be 0005.
The value "1" is set when bit 0 is assigned to digital output terminal [Y1] and the terminal is short-
circuited with [Y1E], and the value "0" is set when it opens. The status of the mechanical relay
contact output terminal [30A], [30B] and [30C] are assigned to bit 8. The value "1" is set when the
circuit between output terminals [30A] and [30C] is closed and the value "0" when the circuit be-
tween [30B] and [30C] is closed. For example, if [Y1] is on and the circuit between [30A] and [30C]
are short-circuited with each other, then the display for LED4 to LED1 would be 0101.
How the hexadecimal display is configured for the terminals to which bits 15 to 0 are assigned and
the 7-segment LED is shown below.
Table 3.12 Segment Display for I/O Signal Status in Hexadecimal Format
LED No.
LED4
Bit
15
14
Input
(RST)* (XR)* (XF)*
terminal
Output
-
-
terminal
0
0
Binary
Hexa-
decimal
on the
LED
monitor
* (XF), (XR), and (RST) are assigned for communication. Refer to " Displaying control I/O signal termi-
nals under communication control ."
Displaying control I/O signal terminals under communication control
There are two control circuit input displays under communications link control – "display with
ON/OFF of the LED segment" and "in hexadecimal format" for input commanded from RS485
communications link. The content is similar to that of the control I/O signal terminal status display;
however, (XF), (XR), and (RST) are added as inputs. Under communications control, however,
displaying I/O signal status supports only the normal logic system (that is ON-active).
Refer to the user's manual of RS485 communication (MEH448) for details on input by com-
mands sent through RS485 communications.
LED3
13
12
11
10
-
-
-
-
-
-
-
0
0
0
0
LED2
9
8
7
6
5
-
-
-
-
-
-
-
30ABC
0
0
0
0
0
– : No correlating control connector
3-22
LED1
4
3
2
1
-
X3
X2
X1 REV FWD
-
-
-
-
-
0
0
1
0
0
Y1
1
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