Epson V7 User Manual
2
3. Errors Displayed on the V7 Series
2-33
M
Solution
1. Confirm link unit settings. (After making settings, cut power to the PLC.)
2. Go to the editor (V-SFT) and confirm the settings in the [Comm. Parameter] dialog in
1. Confirm link unit settings. (After making settings, cut power to the PLC.)
2. Go to the editor (V-SFT) and confirm the settings in the [Comm. Parameter] dialog in
the [System Setting] menu.
3. If errors only occur from time to time, it is possible that there is a noise-based
communication error.
* If you still cannot solve the error even after following the suggestions above, contact your
local distributor.
Error Message
Contents
Solution
Error code received
An error code was sent to the
link unit by the CPU of the PLC.
link unit by the CPU of the PLC.
Examine the CPU error code and solve
the problem.
the problem.
Break
The PLC’s SD (TXD) remains at
the low level.
the low level.
Examine the connection between the
PLC’s SD (TXD) and the V7’s RD (RXD).
PLC’s SD (TXD) and the V7’s RD (RXD).
Invalid memory
(applicable to MITSUBISHI CPU)
(applicable to MITSUBISHI CPU)
You specified an address that
exceeds the memory range of
the PLC that you are linked to.
exceeds the memory range of
the PLC that you are linked to.
Check the type and range of memory
that you set.
that you set.
Invalid CPU model
(applicable to MITSUBISHI CPU)
(applicable to MITSUBISHI CPU)
The PLC currently being
supported does not have a
corresponding CPU.
supported does not have a
corresponding CPU.
Confirm whether or not the CPU that you
are using can be used with the V Series.
are using can be used with the V Series.
Format
The code of the received data is
invalid.
invalid.
Check 1, 2, 3 described below.
Compare
(applicable to HIDIC S10)
(applicable to HIDIC S10)
Transmission data and received
data are different.
data are different.
Check 1, 2, 3 described below.
NAK
(applicable to Allen-Bradley PLC)
(applicable to Allen-Bradley PLC)
A NAK code is received.
Check 1, 2, 3 described below.
TNS discrepant
(applicable to Allen-Bradley PLC)
(applicable to Allen-Bradley PLC)
Transmitted TNS data and
received TNS data are not in
agreement.
received TNS data are not in
agreement.
Check 1, 2, 3 described below.
Communication Error
An unclear communication error
is detected.
is detected.
Check 1, 2, 3 described below.
Count error
(applicable to MITSUBISHI
CPU/Q link unit)
(applicable to MITSUBISHI
CPU/Q link unit)
The expected data amount is
different from the count value.
different from the count value.
Check 1, 2, 3 described below.
Command error
(applicable to MITSUBISHI
CPU/Q link unit)
(applicable to MITSUBISHI
CPU/Q link unit)
The response code differs from
the expected code.
the expected code.
Check 1, 2, 3 described below.
Invalid cassette
(applicable to MITSUBISHI
ACPU)
(applicable to MITSUBISHI
ACPU)
This cassette is not included in
the memory cassettes currently
being supported.
the memory cassettes currently
being supported.
Contact your local distributor.
Password error
(applicable to MITSUBISHI
QCPU)
(applicable to MITSUBISHI
QCPU)
The password is incorrect.
Contact your local distributor.