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For normal communication between Xpanel and PMAC, some I-variables should have the values described below.
I-variable | Set Value | Remark |
I0 | 0 .. 15 | The station number ‘0’ is the default value of PMAC. To set up the PMAC to communicate as station 1 to 15 on a multi-drop serial cable, first communicate with the board as station 0. Set I0 to specify the new station number. Also, set I1 to 3 to enable the station number addressing. |
I1 | 3 | CS handshake is not used; the software card address is required. |
I3 | 2 | Communication handshake style and code. |
I4 | 0 | Checksum disabled, serial errors reported immediately. |
I6 | 1 | Error reporting mode. |
I9 | 0 or 2 | 0 (short form of the decimal) or 2 (short form of hexadecimal). |
I63 | 1 | Echo the <Control-X> character. |
I64 | 1 | Enable the internal response tag. |
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Create a new device | For creating a new device, go to [Tools] → [I/O Devices] or click on the The following images show the first step of creating a new device.  I/O Device Name: Give a device name. This name will be used in the tag configuration window of the database accompanied by the ‘Station Name’. |
Select a device type | After selecting [Ok] in the previous step, the ‘Serial Communication configuration’ dialog box will show up.  Select ‘DELTA TAU PMAC Drive’ in the ‘Device Type’ dropdown menu. Then, configure the proper serial communication parameters (9600bps, no parity, 8 data bits, and 1 stop bit recommended). See the Communication Configuration section for more information. |
Create a station | Move to the [Station] tab of the 'Serial Communication Configuration' dialog box. In this dialog box, all the connected PLC stations can be configured and registered to the Xpanel.  Station Name: Give a name to the PLC. This name will be used in the database window, accompanied by the Device Name. Station Type: Choose the ‘PMAC-Once Device’ (no other type can be selected). Network ID: This field has no effect. Station No.: Specify a number between 0 and 15. 16Bit Data Swap: This field has no effect. 32Bit Data Swap: This field has no effect. String Data Swap: This field has no effect. Using Checksum: This field has no effect. Comm. Error Message Pop Up: When this item is checked, Xpanel displays a communication error message box for every Rx and Tx error. Otherwise (unchecked), Xpanel does not display a message for communication errors. This message box will close automatically after a few seconds. See the Communication Configuration section for more information about the remaining parameters. |
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The address of a tag in Xpanel has the following format:
Tag Type | Format | Example |
Analog | [Symbol][Address] | P0012 |
Digital | [Symbol][Address] | M0215 |
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The following table shows the list of devices that can be referenced in the Xpanel database.
Symbol | Description | Address Range | Type | Access |
I | Variable of fixed meaning for card setup | 0-8191 | Analog | R/W |
P | Global variable for programming use | 0-8191 | Analog | R/W |
M | Variable assigned to a memory location for user | 0-8191 | Analog | R/W |
Q | Local variable for programming use | 0-8191 | Analog | R/W |
DELTA TAU PMAC communication driver supports only the FLOAT data type.
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Communication Cable Wiring
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Xpanel COM1/COM2 RS-232C Connector Type: D89 |  |
Xpanel COM1 RS-422A Connector Type: 5 Pins Terminal Block |  |