APC MGETM GALAXYTM 6000 User Manual download pdf (Page 12)

Page 12 - 6739389EN/FB

Function 11: reading event counters

The master and each slave have

one event counter.

This counter is incremented each

time a frame is received and

interpreted correctly by the slave

(except for function 11 itself).

A correctly transmitted message

increments the counter. If the slave

sends an exception response, the

counter is not incremented.

The master can read the counter to

determine whether or not the slave

correctly interpreted the command

(incremented the counter or not).

These functions can be used to

diagnose the data exchange taking

place between master and slaves.

If the master counter equals the

slave counter, the slave executed

the command sent by the master.

If the master counter is one higher

than the slave counter, the slave

did not execute the command sent

by the master.

Function 15: writing n consecutive bits

request

slave address 0B

CRC 16

response

slave address

1 byte

1 byte 2 bytes 2 bytes 2 bytes

CRC 160B

slave

counter word

réponse

request

slave adress

CRC 16

1 byte

2 bytes

1 byte n bytes 2 bytes

slave address

response

Note: if the slave address is 0, all units execute the write command without sending a

response.

1 byte

2 bytes1 byte 2 bytes 2 bytes

0F CRC 16

1 X 1968

last bit of

first byte

last bit of

byte N

first byte

N bytes

1 N 246

2 X 1968

bit data

number of bits

address of

the first bit

first bit of

first byte

first bit of

byte N

number

of bits

number

of bytes

address of

the first bit

JBUS protocol (continued)

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 37 38

Comments to this Manuals

No comments

APC MGETM GALAXYTM 6000 User Manual Page 12

Comments to this Manuals

Related products and manuals for Power supply units APC MGETM GALAXYTM 6000