Emerson SI-PROFIBUS

88 Unidrive M SI-PROFIBUS User Guide
Issue Number: 3
TELEGRAM 3
The third telegram from the PROFIBUS-DP master acts as the indication to the slave to
send the high data byte from the requested parameter. The data byte is not used in this
telegram, and should be set to 0.
Example telegram
Data word = 0x9300
Stamp number = 3
When the third telegram has been received and processed in the slave node, the node
will mirror the stamp number in the non-cyclic IN word and load the high byte of the
parameter value into the data byte.
Example response
Data word = 0x9300
Stamp number = 3
Data high byte = 0x00 = 0
TELEGRAM 4
The fourth telegram from the PROFIBUS-DP master acts as the indication to the slave
to send the mid-high data byte from the requested parameter. The data byte is not used
in this telegram, and should be set to 0.
Example telegram
Data word = 0x9400
Stamp number = 4
When the fourth telegram has been received and processed in the slave node, the node
will mirror the stamp number in the non-cyclic IN word and load the mid-high byte of the
parameter value into the data byte.
Example response
Data word = 0x9401
Stamp number = 4
Data mid-high byte = 0x01 = 1
Bit b15-b12 b11-b8 b7-b4 b3-b0
Value 1001 0011 0000 0000
Bit b15-b12 b11-b8 b7-b4 b3-b0
Value 1001 0011 0000 0000
Bit b15-b12 b11-b8 b7-b4 b3-b0
Value 1001 0100 0000 0000
Bit b15-b12 b11-b8 b7-b4 b3-b0
Value 1001 0100 0000 0001