Chapter 4 PAS Application Software

Supplemental PAS software can be used for configuring the PM175 through communication ports, for retrieving real-time and recorded data, and for remote upgrading device firmware.

For information on how to install PAS on your PC, see the “PAS Getting

Started” guide supplied on the installation CD.

Configuration Database

To communicate with your meters, create a separate site database for each device. All communication and configuration data for your meter is stored in this database. During configuration store all setup data to the site database so that PAS recognizes device properties regardless of whether the device is online or offline.

To create a new database for your meter:

1. Select Configuration from the Tools menu, and then click the Sites button on the right-hand-side.

2. From the “Look in” box, select the directory where a new database will be stored. By default, it will be the “Sites” directory. Type a site name for your device in the “File name” box, click New, and then click OK.

3. On the Instrument Setup tab, select “PM175” in the

“Model” box. PAS automatically selects the appropriate instrument options for your meter.

4. Select a correct CT secondary current (5A or 1A) for your meter. If you have the analog expander connected to the meter, select an appropriate output current option for the analog expander.

5. If you wish to add any comments for your meter, type them into the “Comment” box.

Setting up Communications

You can communicate with the meter via a changeable COM1 communication port, or through a second factory set serial RS-485/RS-422

COM2 port. Depending on what was ordered, your meter’s COM1 port can be equipped with an RS-232/RS-422/RS-485 serial interface, with a dial-up

54 Series PM175 Powermeters

Chapter 4 PAS Application Software Setting up Communications modem for communicating through public telephone lines, or with an

Ethernet module for communicating through the Internet.

To configure your communications with the PM175:

1. Select Configuration from the Tools menu. Under the

Communication group on the Instrument Setup tab, select the type of connection for your device.

2. Set the device communication address you assigned to the PM175.

3. In the “Sampling Rate” box, select a rate at which PAS updates data on your screen when you continuously poll the device in the PAS Data Monitor.

The communication protocol and port settings in PAS must match the settings made in your device.

Communicating through a Serial Port

Select Serial Port/Modem Site on the Configuration tab, and then click on the

Connection tab to configure your serial port settings.

Configuring a Serial Port

1. On the Connection tab, select a COM port from the

“Device” box, and then click Configure.

2. Specify the baud rate and data format for the port.

Choose the same baud rate and data format as you have set in the device, and then click OK. The default settings for the local RS-232 and RS-422/485 ports are 19200 baud, 8 bits with no parity.

Selecting the Communications Protocol

1. On the Connection tab, click Protocol.

Series PM175 Powermeters 55

Chapter 4 PAS Application Software Setting up Communications

2. In the “Protocol” box, select the same communications protocol as you have in your meter. The default protocol setting in your meter for all ports is Modbus RTU.

For more information on configuring the protocol parameters, refer to the

“PAS Getting Started” guide.

Communicating through a Dial-up Modem

Configuring a Modem

1. On the Connection tab, select a local modem installed on your PC.

2. Click on Phones to add the phone number of the remote meter to the phone list.

3. Type the phone number in the “Phone number” box, add comments if you desire, click Add, and then click OK.

4. From the “Phone number” box on the Connection tab, select the phone number from the list, and then click OK.

Selecting the Communications Protocol

On the Connection tab, click Protocol, and then select the protocol settings as shown above for a serial port.

Communicating through the Internet

If you are communicating through the Ethernet port, you should define the IP address of your meter on the network.

1. On the Instrument Setup tab, select Internet Site.

2. Click on the Connection tab.

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3. Click on the “IP address” and type in the IP address of your meter. The default IP address preset at the factory is

192.168.0.203.

4. In the “Protocol” box, select the communications protocol for the TCP port. The meter can provide Modbus/TCP connections on TCP port 502 and DNP3/TCP connections on port 20000. The host port is set automatically as you select the protocol. Select “Modbus RTU” for

Modbus/TCP or “DNP3” for DNP3/TCP.

Series PM175 Powermeters