{"id":1084,"date":"2016-12-07T01:00:07","date_gmt":"2016-12-07T07:00:07","guid":{"rendered":"https:\/\/scadametrics.com\/blog\/?p=1084"},"modified":"2022-10-15T16:02:26","modified_gmt":"2022-10-15T22:02:26","slug":"using-the-scadametrics-bell-202-modem-with-allen-bradley-plcs","status":"publish","type":"post","link":"https:\/\/scadametrics.com\/blog\/?p=1084","title":{"rendered":"SCADAmetrics Bell 202 Modem Helps Establish Radio Telemetry Communications between Allen Bradley PLC’s"},"content":{"rendered":"

\"James

Jim ‘Slim’ Mimlitz, SCADAmetrics<\/p><\/div>In 2012, SCADAmetrics introduced the Model B202<\/a>\u00a0 \u2014 an industrial Bell 202 modem designed for radio telemetry applications.\u00a0\u00a0The B202\u00a0is designed to provide external, non-proprietary data modulation\/demodulation\u00a0for a wide range of popular analog telemetry radios, including models from Ritron, Tecnet, MDS, and RF Neulink, and Calamp.<\/p>\n

\"B202:<\/a>

Model B202: SCADAmetrics Bell-202 Modem for Telemetry Radios.<\/p><\/div>\n

An interesting application is the use of Allen Bradley MicroLogix PLC’s<\/strong>, B202 modems, and narrowband analog telemetry radios to form a reliable, non-proprietary SCADA radio network.<\/p>\n

Rockwell Automation offers the “DF1 Radio Modem”<\/strong> serial communication protocol, which is optimized for radio\/SCADA applications. \u00a0This protocol, in conjunction with appropriate PLC settings, is suitable for radio telemetry communications.<\/p>\n

As a result of laboratory validations, we are pleased to report that compatibility is verified between the MicroLogix and the B202.<\/p>\n

Our validation testing utilized a Allen Bradley MicroLogix 1400 PLC<\/strong> set up as a DF1 Radio Modem Client<\/strong>\u00a0communicating with a SCADAmetrics EM-100 EtherMeter\u00ae<\/strong>\u00a0set up as a DF1 Radio Modem Server<\/strong>. \u00a0The narrowband analog telemetry radios used in this test were Ritron<\/strong><\/a> models DTX-PLUS II<\/strong> equipped with\u00a0SCADAmetrics DTX Din-Rail-Mounting Kits<\/strong>.<\/p>\n

As a consequence of the tests, we have authored an Application Note that details the steps required to use the B202<\/strong> with MicroLogix PLCs<\/strong> and narrowband analog telemetry radios:<\/p>\n

Link to Application Note<\/a><\/strong><\/p>\n

An important reference that we also recommend is Rockwell’s SCADA Document:<\/p>\n

Link to Rockwell SCADA Document<\/strong><\/a><\/p>\n

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We have also produced a short YouTube video that demonstrates the live DF1 Radio Modem communications that were achieved in the validation testing:<\/p>\n

Link to YouTube Video Demonstration<\/strong><\/a>
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