Siemens Sinamics G120P Operating Instructions Manual page 225

Parameter contents
Parameter contents can be parameter values or connector parameters. You require two
words for connector parameters. For interconnecting connector parameters refer to BICO
technology: Interconnecting signals (Page 174).
Enter the parameter value in the parameter channel right-justified as follows:
• 8-bit values:
• 16-bit values:
• 32-bit values:
Enter a connector parameter right-justified as follows:
• Number of the connector parameter:
• Drive object of the connector parameter:
• The index or bit field number of the connector parameter: Low word, bits 0 ... 9
Telegram examples, length of the parameter channel = 4
Read request: Read out serial number of the Power Module (r7841[2])
To obtain the value of the indexed parameter r7841, you must fill the telegram of the
parameter channel with the following data:
● PKE, bit 12 ... 15 (AK): = 6 (request parameter value (field))
● PKE, bit 0 ... 10 (PNU): = 1841 (parameter number without offset)
Parameter number = PNU + offset (page index)
(7841 = 1841 + 6000)
● IND, bit 8 ... 15 (page index): = 90 hex (offset 6000 ≙ 90 hex)
● IND, bit 0 ... 7 (subindex): = 2 (index of the parameter)
● Because you want to read the parameter value, words 3 and 4 in the parameter channel
for requesting the parameter value are irrelevant. They should be assigned a value of 0,
for example.
Figure 6-15 Telegram for a read request from r7841[2]
Inverter cabinet units
Operating Instructions, 12/2014, A5E32923362A
Low word, bit 0 ... 7,
bits 8 ... 15 are zero.
Low word, bits 0 ... 15,
Low word and high word
Operation
6.8 Communication via RS485
High word
Low word, bits 10 ... 15
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