APC 6000 user manual Functions, Function 1 and 2 read N bits

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Functions

Function 1 and 2: read N bits

◗function 1: read output or internal bits;

◗function 4: read input bits.

The number of bits must be less than or equal to the bit field size (see memory board).

JBUS protocol (continued)

	request

	slave address			1 or 2		address of		number of bits		CRC 16
						first bit		number of bits
						first bit		to read
						MSB LSB		to read
						MSB LSB
	1 byte

				1 byte		2 bytes		2 bytes		2 bytes

response
slave address	1 or 2	number of	first	last	CRC 16
slave address	1 or 2	bytes	byte	byte	CRC 16
		read	read	read
1 byte	1 byte	1 byte		✷ bytes	2 bytes
byte detail:

last bit transmitted

first bit transmitted

Unused bits are set to zero

example

Reading bits at location 404 to 411 of slave at address 20H (charger signals)

request:

20 01 0404 0E 66 FE

response:

20	01	02	10101001					00101110					FB B7

													(binary values)

		40B				404 411					40C
		40B				404 411					40C

6739389EN/FB - Page 9

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Contents GTC link communication interface Mgetm GalaxyTM2 6739389EN/FB Contents Introduction PresentationACQ module COM moduleInterface Communication settingsJbus protocol Principle Synchronizing data exchangesDescription of request and response frames Checking received messages on the slave side Function 1 and 2 read N bits FunctionsFunction 5 writing a bit Function 3 and 4 read N wordsFunction 6 writing a word Function 8 reading error diagnosis countersFunction 15 writing n consecutive bits Function 11 reading event countersMSB LSB MSB LSB MSB Function 16 writing n consecutive wordsCRC 16 algorithm Example of CRC computation Table of Most Significant Bytes for CRC16 Computation Example of CRC 16 computation in C using table lookupJbus protocol Unitary UPS UPS theory of operationParallel connected UPS with Static Switch cubicle Operation without batteryUPS without Mains Operation with battery Block diagram Unitary UPSMeasured quantities Normal operation Load on battery Main status bits UPS operating informationOperating modes Load on Mains Load on bypass Parallel connected UPS Main status bits of system operations Normal operation Load on battery DisconnectedStatic Switch cubicle Static Switch Main indicators of system operationsNormal operation Load on Mains Load on bypass Sample commands List of variable fields Example of read data array commands sent by the terminalSystem information Message formatGeneral definitions Signaling field Tables of measured dataCurrent fields Voltage fields Power fields Frequency fieldsBattery and adjustments fields Tables of binary dataRectifier-charger Connectivity InverterGlobal information Table of control devicesWord address Glossary of information descriptorsInverter stack overload 0=no/1=overload Word address 4C Word address 4AWord address 4E summary Word address 4DWord address C1 C10 call reset 0= not activated / 1=activated

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