Vacon 20 User Manual

Communications vacon • 21
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
6
Reply frame:
6.4.2 Example 2 - Read process data
Read the Process Data 42103…42104 with command 4 (Read Input Registers): for this example when
using ACCN1004 set P10.1=1, when using ACIT1075 set P11.1=0.
Command Master - Slave:
Message frame:
The reply to the Read Input Registers message contains the values of the read registers.
Answer Slave - Master:
Reply frame:
Table 19.
01 10 07 D0 00 03 80 85
Table 20.
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 21.
01 04 08 36 00 02 93 A5
Table 22.
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
Actual Speed = 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
Table 23.
01 04 04 13 88 09 C4 78 E9

Vacon 20 Specifications

General

Communication Options	Modbus, CANopen, PROFIBUS, Ethernet
Protection Class	IP20
Power Range	0.25 to 18.5 kW
Control Method	Scalar control, Vector control
Ambient Temperature	-10°C to +50°C