Procedure:
- Connect the CelciuXº using the procedure described in “Connection to CX Thermo via USB port”. Execute Set-up for EJ1
- Connect the PC to the Siemens PLC and execute Set-up for S7-300
- Connect the PC to the GWY to program the gateway. Execute Set-up for GWY
- After set-up, connect the PLC, Gateway and CelciuXº
CelciuX° can communicate OMRON NT-LINK via RS232 or RS485.
Below you will find the RS232 connection:
Note: for RS232 communication dipswitch 8 has to be “ON” at the HFU.
Note:
If you use a standard GWY-00-B, the driver for NT-Link must be manually added.
If you use the specific GWY-S7, the driver is already included but a separate 5 VDC
supply has to be included in de wiring to power the GWY unit.
In the case of GWY-00-B it can use the standard 24 VDC supply for power.
In the case of GWY-S7 power must be supplied via the 9 PIN D-Type and communications pins connected appropriately
Set-up:
• CelciuXº (EJ1N-HFU__):
- If not already done, connect PC to the HFU via E58-CIFQ1 USB cable
- Start CX-Thermo, select the programless communications editor
- Define the parameters. (example: DM0000 to DM0005 & DM1000 to DM1005).
- Download the parameters to the EJ1.
- Write down the DM registers range used in your Ej1 project.
• Siemens S7-300 PLC
- Always define MPI address 2, 187500 baud.
- Define on your PLC which addresses are to be used. (MW registers are always present. DBx.DBW. have to be created.)
- Program consecutive addresses, preferably in the same order as the EJ1 project.
- GWY-00-B
- Install RENU GWY 3.11
(can be freely downloaded from RENU website ( www.renuelectronics.com)
- Unzip the “update for EJ1 on GWY3.11.zip” to its respective folders.
(this update file can be find only in the product database at the moment)
- Start “Gateway 3.11.EXE”
- Select the “GWY-00”
- Select in the left column ‘Siemens S7-300 series PLC’ and the model you have.
(if model is not available select the ‘generic (gen) PLC’)
- Select in the right column “NT Link”
(if not present the update has not been zipped successfully)
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Use GWY software to setup two blocks for reading and writing parameters
- Select configure
- In the first line above you can see the mapping made for the 6 consecutive words (read) DM0000 to DM0005 being mapped to MW000 (to MW010)
This means that:
DM0000 MW000
DM0001 MW002 etc.
- To add second line click “add-new” (bottom of screen, see image below).
- Define the 6 words to write DM1000-DM1005 (MW100-MW110)
- If you have mapped (aligned) the DM registers to the PLC registers we will need to map the communications parameters still
- Press PLC 1 set. These are the Siemens parameters. Nothing needs to be changed.
- Press PLC2 set. Set Baudrate to the match baudrate selected in EJ1.
Press OK.
- From here your program is ready and can be downloaded in to the GWY-00B
- Connect the programming cable to your GWY (com1) and to the com port of your PC.
- Press download
- On next screen press “select all “ and select the used comport of your PC.
- Press download again and confirm the generated message.
- You will now see that the program will start a sequence in downloading, firmware, drivers and project. (do not disconnect or power-down)
- After download , restart the GWY-00B
- Now connect the EJ1 to PLC2 side and Siemens to PLC 1
- Restart the PLC and CelciuXº
Your EJ1 is now connected to the MPI bus of Siemens.
- Set the read-demand-flag MW100 (DM1000) to “2” to start the communication
- Read the process value (PV) from unit #1 loop 1+2 in MW008 and MW010
- To Change set value (SV) for unit #1 loop 1+2 set the required values in MW108 (DM1004) and MW110 (DM1005) AND set MW102 (DM1001) to “1” to force the setting change.
- Details can be found in the EJ1N User Manual H142
