IMD 100 Integration manual 4189360015 Rev. G
Communication
Page 78 of 243
7.2
Serial data interface
The serial data interface is implemented as a virtual com port over USB. It is mainly used for a
communication with a PC running the IMD Manager for configuration or monitoring/troubleshooting
purposes. The interface allows for 16 bit or 32 bit data packages. The following figures shows the
format for both options.
Serial/USB 16 bit data package format
Sending from the PC to the drive
Drive response to the PC
Char1
Char2
Char3
Char4
Char5
Char6
Char7
Byte1
Byte2
Reg. ID
Reg. ID
Data
Data
Data
Data
Sync
Data
Data
Bits
07..04
Bits
03..00
Bits
15..12
Bits
11..08
Bits
07..04
Bits
03..00
"X"
Bits
07..04
Bits
07..04
ascii
ascii
ascii
ascii
ascii
ascii
ascii
binary
binary
Serial/USB 32 bit data package format
Sending from the PC to the drive
Drive response to the PC
Char1
Char2
Char3
Char4
Char5
Char6
Char7
Char8
Char9
Char10
Char11
Byte1
Byte2
Byte3
Byte4
Reg. ID
Reg. ID
Data
Data
Data
Data
Data
Data
Data
Data
Sync
Data
Data
Data
Data
Bits
07..04
Bits
03..00
Bits
31..28
Bits
27..24
Bits
23..20
Bits
19..16
Bits
15..12
Bits
12..08
Bits
07..04
Bits
03..00
"X"
Bits
07..04
Bits
07..04
Bits
07..04
Bits
07..04
ascii
ascii
ascii
ascii
ascii
ascii
ascii
ascii
ascii
ascii
ascii
binary
binary
binary
binary
The following example shows a 16 bit format read operation from register ID 0x30, which contains the
actual speed value:
Example of reading actual speed, 16 bit format (Return value of up to ± 32767 equals to 2 bytes)
Sending from the PC to the drive
Drive response to the PC
Char1
Char2
Char3
Char4
Char5
Char6
Char7
Byte1
Byte2
Reg. ID
Reg.
ID
Data
Data
Data
Data
Sync
Data
Data
Bits
07..04
Bits
03..00
Bits
15..12
Bits
11..08
Bits
07..04
Bits
03..00
"X"
Bits
07..04
Bits
07..04
3
D
0
0
3
0
X
Lo
byte
Hi
byte
Read register
(0x3D)
Actual speed value register
(0x30)
ascii
Value of
register 0x30
When using the IMD Manager
the serial connection is plug and play.
Follow the instructions in the IMD Manager Installation instructions to install the IMD Manager.