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langancm

1336PlusII - PCCC Object Messaging

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Hello, We are using a FieldServer which reads PCCC object messaging from our Power Flex 70 and 1336 PlusII drives. Using the N-Files (150) we are able to read the correct messaging from the Power Flex 70 Drives. The problem we are having is reading the 1336 PlusII PCCC objects. We are reading info which is out of wack and don't know if it's how we are reading the N-files or what. Can someoen shed some light on the following; 1) What N-Files should we be using? We currently are using N10 which is SCANport Product. 2) Are these PCCC objects 32 UINT or 16 UINT. The device we are using is a encompass parter of AB http://www.ab.com/db/encompass/bps_dir_upd...region=AMERICAS http://www.fieldserver.com/products/gatewa...-IP_Adapter.php Thanks for any suggestion on this

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The 1203-EN1 and 1336 Plus II will work a little differently than the 20-COMM-E and PowerFlex because of their older SCANPort protocol. You are correct to use the "N10:x" file. N10:1 is Parameter 1, N10:12 is Parameter 12, N10:50 is Parameter 50. SCANport parameters are all 16-bit so one "N10:x" element equals one Parameter. Unlike the 20-COM-E, you don't need to read two N-file elements at a time.

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Thanks We are able to read the data - But the data we are reading from the field server is the internal value and not the actual value. In my case, we are reading #53 which is the DC Voltage. From the Drvie Explorer we are reading the correct value of 827 Vlts. But the field server device is reading the internal value of 5890. How does the internal value get calcuated to 827 Vlts? Thanks DC_Voltage1336.doc

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When you are reading a value from a drive you will always get the internal units. Some of them are simple, like Frequency being in 0.1 Hz increments, so 123 = 12.3 Hz. But some of a little more complex and are often scaled against a maximum value or with respect to the datatype used to store them. See the 1336F-UM002 User Manual, page 6-5, for the scaling of the DC Bus Voltage. For this parameter and several like it, the internal range is 0-4096, representing 0 to the "Drive Rated Volts". If this Rated Volts value (parameter 147) is 575 Volts, for example, then 5890 / 4096 = x / 575. 5890/4096 * 575 = 826.64 volts.

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Thanks, Did the calcuations and everything is reading write now. Have a good weekend

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