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Operating Instructions
Chapter
5
Flexi Soft Gateways
8012664/XB29/2013-06-11
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
83
Subject to change without notice
Ethernet gateways
Modbus commands and error messages
The FX0-GMOD supports the following Modbus commands and error messages:
Modbus command
Value
Read holding registers
3
Write multiple registers
16 (10h)
Read/write multiple registers
23 (17h)
Modbus error response
Description
1 Illegal function
The requested function is not supported
2 Illegal data address
Undefined data address received
3 Illegal data value
Request with illegal data values, for example not
enough data requested for a data set
10 Gateway paths not available
Invalid configuration, for example polling or
setting of the digital outputs via PLC during
operation of the FX0-GMOD in master mode
5.3.4
TCP/IP configuration interface
See section 5.1.1 “TCP/IP configuration interface” on page 32.
5.3.5
Ethernet TCP/IP socket interface
See section 5.1.2 “Ethernet TCP/IP socket interface” on page 37.
5.3.6
Diagnostics and troubleshooting
For information how to perform diagnostics on the Flexi Soft system please refer to the
operating instructions for the Flexi Soft Designer software (SICK part no. 8012998).
Error
Possible cause
Possible remedy
The Flexi Soft Designer tool
does not connect to the Flexi
Soft gateway module
FX0-GMOD has no power supply.
FX0-GMOD is not in the same
physical network as the PC.
The PC is configured to another
subnet mask in the TCP/IP settings.
FX0-GMOD has already been
configured once and has a fixed set
IP address or an IP address
assigned by a DHCP server that is
not recognised.
Establish the power supply.
Check the Ethernet wiring and network
settings on the PC and correct if
necessary.
Set the subnet mask on the PC to
255.255.0.0 (factory setting of the
FX0
R
GMOD).
Check the communication settings in
the Flexi Soft Designer.
FX0-GMOD does not supply any
data.
PWR Green
LINK/ACT /
Green
MS
Red/green
FX0-GMOD is configured for data
transfer to PLC, but Ethernet
communication is not yet
established or faulty.
Duplicate IP address detected.
Another device on the network has
the same IP address.
Minimum one Ethernet connection
needs to be established. Set up
Ethernet connection on PLC side, check
Ethernet cabling, check Ethernet
connection settings on PLC and in the
Flexi Soft Designer. If no Ethernet
communication is required, disable the
Ethernet connections/PLC interfaces on
the FX0-GMOD.
Adjust IP address and power cycle
device.
For Modbus TCP communication check
the Modbus port number at the PLC
(the Modbus port number must be
502). Do not confuse the Modbus port
number with the TCP/IP socket port
number which must be > 1023.
Tab. 63: Modbus commands
Tab. 64: Modbus error
messages
Tab. 65: Troubleshooting for
the FX0-GMOD
Symbol description:
: LED is off
Green: LED lights up green
Red: LED flashes red