3-22
Hexadecimal expression
Each I/O terminal is assigned to one of the 16 binary bits (bit 0 through bit 15). The bit to which no I/O terminal
is assigned is considered to have a value of "0." The I/O signals are thus collectively expressed as a
hexadecimal number (0 through F).
In the FRENIC-Eco Series, digital input terminals [FWD] and [[REV] are assigned to bits 0 and 1, and [X1]
through [X5] to bits 2 through 6, respectively. Each bit assumes a value of "1" when the corresponding signal is
ON and a value of "0" when it is OFF
(Note)
. For example, when signals [FWD] and [X1] are ON while all the
other signals are OFF, the status is expressed as "0005H."
(Note) The ON/OFF state of each signal at terminals [FWD], [REV], and X1 through [X5] is to be interpreted according to
the states of the source/sink switch as shown in Table 2.8 in Chapter 2 of the FRENIC-Eco Instruction Manual.
Digital output terminals [Y1] through [Y3] are assigned to bits 0 through 2. Each is given a value of "1" when it is
short-circuited to [CMY], or a value of "0" when its circuit to [CMY] is open. The status of relay output terminal
[Y5A/C] is assigned to bit 4, which assumes a value of "1" when the contact between [Y5A] and [Y5C] is closed.
The status of relay output terminal [30A/B/C] is assigned to bit 8, which assumes a value of "1" when the contact
between [30A] and [30C] is closed or "0" when the contact between [30B] and [30C] is closed. For example,
when terminal [Y1] is ON, terminals [Y2] and [Y3]] are OFF, the contact between [Y5A] and [Y5C] is opened,
and the link between 30A and 30C is closed, the status is expressed as "0101H."
Table 3.11 Hexadecimal Notation
Data
Displayed
Highest digit Lowest digit
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Input signal
(RST)
*
(XR)
*
(XF)
*
- - - - - - [X5] [X4] [X3] [X2] [X1] [REV] [FWD]
Output signal - - - - - - -
[30A/B
/C]
- - -
[Y5A
/C]
- [Y3] [Y2] [Y1]
Binary
0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1
Example
(input)
Hex
0005H
-: unassigned
* (XF), (XR), (RST) are for communications. Refer to the subsection below.
Displaying control I/O signal terminals under communication control
During control via communication, input commands sent via RS-485 communications can be displayed in two
ways depending on setting of the function code S06: "Display with ON/OFF of the LED segment" or "In
hexadecimal format." 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,
I/O display is in normal logic (ON when active) (using the original signals that are not inverted).
Refer to the RS-485 Communication User's Manual for details on input commands sent through RS-485
communications and the instruction manual of communication-related options as well.
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