ICP DAS USA GW-7472 Installation guide

ICP DAS
GW-7472 FAQ
FAQ Version 3.1
ICP DAS Co., Ltd.
2014-10-13

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Table of Contents
Q1: Could you please confirm that GW-7472 works with SLC-500 (SLC5/05) without any problems?.................3
Q2: In some case, the byte order of the AI/AO word data in the communication is reversed, i.e. low byte is MSB
and high byte is LSB. Is there a byte swapping function?.............................................................................................3
Q3：How to make a Class1 connection with the GW-7472 Utility Diagnostic window?...........................................4
Q4：Why did the pop-up message “FW Version Error” be shown after I run the new version Utility?..................5
Q5：How to connect to the Allen-Bradley PLC？...........................................................................................................8
Q6：How to check the connections between the GW-7472 and the Modbus devices？.......................................10
Q7: How can I check the wire connections？................................................................................................................11
Q8:How to set up the GW-7472 for Modbus TCP？.....................................................................................................12
Q9:How to set up GW-7472 in RSLogix 5000 MSG ladder element？.....................................................................13

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Q1: Could you please confirm that GW-7472 works with SLC-500 (SLC5/05) without any
problems?
A1: We never test GW-7472 this device with SLC-500. But this device ever tested with the Hilscher
CIFX 50-RE Ethernet/IP master. It can communicate with the master via following I/O connection
methods.
(1) Transport and trigger: Exclusive-Owner, Cyclic
(2) Original to Target Type: POINT2POINT, (MULTICAST not supported)
(3) Target to Original Type: POINT2POINT, MULTICAST
Q2: In some case, the byte order of the AI/AO word data in the communication is reversed, i.e.
low byte is MSB and high byte is LSB. Is there a byte swapping function?
A2: After the firmware version 1.5 of GW-7472, the utility supports the “Byte Order Setting” as shown
in the following figure.

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Q3：How to make a Class1 connection with the GW-7472 Utility Diagnostic window?
A3：Configure the total output/input size in the “Forward Open Class1 Behavior”on the Diagnostic
window. Please notice that the total input/output size on the Diagnostic window and the total
input/output size on the Configuration window must be the same. Then, you can click “Class1”button
to make a Class1 connection on the Diagnostic window.

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Q4：Why did the pop-up message “FW Version Error”be shown after I run the new version
Utility?
A4：The utility of version 2.0 and later only supports the firmware version 2.0 and the after. Please go
to the product page of the GW-7472 to get the new firmware and update the module. The firmware

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website is shown below ( ftp://ftp.icpdas.com/pub/cd/fieldbus_cd/ethernetip/gateway/gw-7472/firmware/ ).
Please follow our steps to update the firmware ：
Step1：We provide two ways to check MAC address.
(a) Use v1.X GW-7472 Utility configuration window to find out your MAC address on the top of
“Network Settings”.
(b)In another way, you can get your MAC address from the ARP list. Follow the “[Start Menu] [Run]
[cmd]” to open the command window and check GW-7472 IP address through Ping command (e.g.
ping 192.168.255.1). Then, you could get theARP list through ARP command (e.g. arp -a). Finally,
you`ll get the MAC address is shown below.

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Step2：Follow these steps “[Main Menu][Device][Download]”to open the FW download window.
Key in the MAC address we found in Step1, and an available IP address on this window. Select the
firmware file (e.g. GW7472_v2.dat) to download.
Step3：After downloading the firmware, please check the Utility whether the version is V2.0 or not on
the Main Menu.

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Q5：How to connect to the Allen-Bradley PLC？
A5：It is tested and confirmed that the GW-7472 can be connected to the Allen-BradleyTM ControlLogix
Logix 5563 through the 1756-ENBT ControlLogix EtherNet/IP Module successfully. The configuration
software is RSLogix 5000. Please follow the steps below:
(a)Add a new Module and select ETHERNET-MODULE.
(b)Configure the “Module Properties” window. Please notice that the total input size on the Module
Properties window and the total input size on the GW-7472 Utility must be the same. Also, the total
output size on the Module Properties window and the total output size on the GW-7472 Utility must be
the same.

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Q6：How to check the connections between the GW-7472 and the Modbus devices？
A6：Open the GW-7472 Utility Diagnostic window, and set the UCMM values (Service = E, Class Code
= 4, Instance ID = 67, Attribute ID = 3), as shown in the figure below. Click “Class3”to start the
connection. If the devices have been connected and receive the information from Modbus devices, the
“common packet” will show “00”. If GW-7472 couldn`t receive the information from a Modbus devices,
the “common packet” will show “06”. The status table is shown below, and it could be found in the
GW-7472 manual on page 47.
Service = E , Class Code = 4 , Instance ID
= 67 , Attribute ID = 3

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Q7: How can I check the wire connections？
A7:There are 4-wire RS-422 wiring and 2-wire RS-485 wiring. The wire connection interface is shown
below.
The wire connections between Modbus masters and Modbus slaves must be follow the figure we
show below.For non-isolated RS-422/485 ports, you should connect all signal grounds of RS-422/485
devices together. This reduces common-mode voltage between devices.
RS-485
RS-422

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Q8:How to set up the GW-7472 for Modbus TCP？
A8:In the GW-7472 configuration window, please change the “Device Options”to be “TCP No.0”in
the “Modbus Request Command”and fill out the Modbus device settings you want to connect with.
Then, set the Server IP in the “MBTCP Server Setting”. Please notice that the total input/output size
on the Diagnostic window and the total input/output size on the configuration window must be the
same. The example settings are shown below.

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Q9:How to set up GW-7472 in RSLogix 5000 MSG ladder element？
A9: If you want to connect to GW-7472 with Get Attribute Single or Set Attribute Single, you can
configure MSG ladder element in your routine. Please refer the steps to complete the configurations.
(1) Create input/output tags and input/data data. The data type of tags are “Message”. The data
type of data are “SINT[…]”. Please notice that the size of data array (RSLogix 5000) and the size
of I/O length (GW-7472) must be the same.

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(2) Add a new routine.
(3) Add MSG element in your ladder and select “input_tags”.

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Configure the Message Configuration. here we have to select the “Service Type”of “Get
Attribute Single”. To fill in the “Class”as 4, “Instance”as 101 and “Attribute”3. In the
“Destination”dropdown box select the “input_data”.
Next select the “Communication”tab, first click on the “Browse”button. This will bring up a
new window; here select the Ethernet module in the PLC and click OK. Now the name of the
Ethernet module should be filled in at the “Path”, here we also have to fill in the full path to
GW-7472 (in this example GW-7472 have the IPaddress of 192.168.22.72). After the name of
the Ethernet module in the PLC, add a comma, a space, and a 2, this indicates that the
message should be routed out on Ethernet. Following the 2 add a comma, a space, and the
IP-address to GW-7472, here 192.168.22.72. This is everything that has to be done here, click
on OK.

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(4) Add MSG element in your ladder and select “Output_tags”.

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Configure the Message Configuration. here we have to select the “Service Type”of “Set
Attribute Single”. To fill in the “Class”as 4, “Instance”as 102 and “Attribute”3. For “Source
Element”select the “output_data”tag and the “Source Length”should be 4 bytes. Under
“Communication”tab the “Path”should be the same as the one used to read data.
(5) This is a simple example that only will issue one read request, in a normal program some
logic have to be added to trigger the instruction again, for more information regarding this issue
refer to documentation for RSLogix5000. Now download the program to the PLC and go “Online”.

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If you want to send Get/Set Attribute Single continuously, you can refer to the ladder below.