Vacon 100 INDUSTRIAL - Example 2 - Read Process Data

Communications vacon • 43
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6
Reply frame:
6.5.2 Example 2 - Read process data
Read the Process Data 42103…42104 with command 4 (Read Input Registers).
Command Master - Slave:
Message frame:
The reply to the Read Input Registers message contains the values of the read registers.
Answer Slave - Master:
Table 39.
01 10 07 D0 00 03 80 85
Table 40.
ADDRESS 01 hex Slave address 1 hex (= 1)
FUNCTION 04 hex Function 4 hex (= 4)
DATA
Starting address HI 08 hex
Starting address 0836 hex (= 2102)
Starting address LO 36 hex
No. of registers HI 00 hex
Number of registers 0002 hex (= 2)
No. of registers LO 02 hex
ERROR
CHECK
CRC HI 93 hex
CRC field 93A5 hex (= 37797)
CRC LO A5 hex
Table 41.
01 04 08 36 00 02 93 A5
Table 42.
ADDRESS 01 hex Slave address 1 hex (= 1)
FUNCTION 04 hex Function 4 hex (= 4)
DATA
Byte count 04 hex Byte count 4 hex (= 4)
Data HI 13 hex
Speed reference = 1388 hex (=5000 => 50.00%)
Data LO 88 hex
Data HI 09 hex
Output Frequency = 09C4 hex (=2500 =>25.00Hz)
Data LO C4 hex
ERROR
CHECK
CRC HI 78 hex
CRC field 78E9 hex (=30953)
CRC LO E9 hex