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15:44 Dec 30, 2019 |
French to English translations [PRO] Tech/Engineering - Energy / Power Generation / O&M Agreement | |||||||
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| Selected response from: Daryo United Kingdom Local time: 07:30 | ||||||
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Summary of answers provided | ||||
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4 +1 | Mode C/E |
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Discussion entries: 9 | |
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Mode C/E [EC 62056-21 Protocol modes] Mode C/E Explanation: "taux de transmission maximale jusqu’à 19200 baud (fixé ou Mode C/E)" some 20-30 years ago that would have been the specs of a top of the range modem. Compared to today's broadband speeds, it's like the speed of a very lazy snail, but that standard is still used and good enough for some applications that don't require transmission of huge volumes of data. this is a relevant reference https://github.com/lvzon/dsmr-p1-parser/blob/master/doc/IEC-... BTW, it reminds me of the "dark art" needed to make a modem connect to the Internet 20-30 years ago. IEC 62056-21 Protocol modes IEC 62056-21 meters may support several different protocol modes: A. Fixed rate (300 baud), bidirectional ASCII protocol. The master device sends a sign-on sequence, the slave device (meter) responds with an identifier followed by a data telegram. The master may optionally enter programming mode after receiving the telegram. B. Bidirectional ASCII protocol with baud-rate switching. This is similar to mode A, but after transmitting the identifier at 300 baud, the slave device may switch to a higher baud rate, which is specified in the identifier. C. This is similar to mode B, but it allows manufacturer-specific extentions and a device in mode C will not automatically send a data telegram following the identifier. Instead, the master has to switch to readout or programming mode, and may also specify whether the baud rate should be switched or not. D. Fixed rate (2400 baud) unidirectional ASCII protocol. Data is either pushed by the meter or requested some other way (e.g. by pushing a button). The meter sends an identifier followed by a data telegram. E. This is an extended version of modes A-C, whereby the meter may specify that it supports other (e.g. binary) transmission protocols. So the meaning of "Mode C/E" is: "Mode C - Extended version" (of the IEC 62056-21 Protocol) Having said that, these "modes" are usually not translated - would create too much headaches and confusion. more: https://learn.sparkfun.com/tutorials/serial-communication/al... -------------------------------------------------- Note added at 1 day 16 hrs (2020-01-01 07:51:42 GMT) -------------------------------------------------- "fixé" would be the mode A or D, but "fixed baud rate" is enough |
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