Description of the drive module
Positioning module UVE8112, IMD10
Data transfer
The data exchange with the drive module can be realised via the two following interfaces:
•
serial interface RS232
•
Can bus
The RS232 interface can be found on the front side of the module; the Can lines are led via the rear
connector.
Both interfaces can be used to access all objects (parameters) of the module. The access rights
depend on the communication channel which was set by means of the DIP switch on the front side.
Communication
channel
Switch position Access right
CAN S7
0
S8 0
Can:
RS232:
Read and Write
Read only
RS232 S7
1
S8 0
Can:
RS232:
Read only
Read and Write
Analogue input
S7
X
S8 1
Can, RS232:
Read and Write ("Control word" and
"Modes of operation" cannot be written)
In case of a communication via Can, the CanOpen protocol is used (see last chapter).
For the serial communication (asynchronous, 1 start bit, 8 data bits, 1 stop bit and no parity bit), parts
of this protocol are used, i.e. the SDO transfer, the emergency message and the boot-up message.
In case of the SDO, telegrams of a length of up to 8 bytes are exchanged between two participants
(see SDO description on page 70). These 8 bytes are transferred in hexadecimal format as ASCII
characters, framed by an identifier and a checksum. Each message is terminated with a carriage
return (CR, 0x0D). Contrary to SDO, not the entire 8 bytes have to be transferred, if the data
contained are shorter than 4 bytes.
Likewise, the boot-up message and the emergency messages in case of a fault is sent from the
module via the serial interface.
See "Monitor window for serial interface" on page 37.
Control
character
Check sum
1 - 8 byte data = 2 - 16 characters
1st byte
Last byte
2 characters
1 character
Carriage
return
1 character
Control
character
Meaning
C
SDO query (is received by the module)
B
SDO response (is sent by the module)
E Boot-up
message
1 Emergency
telegram
F
Error during transfer
F1: received too few characters
F2: checksum error
F3: received too many characters
F4: error during the conversion of the characters
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Содержание IMD1
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Страница 114: ...Appendix Positioning module UVE8112 IMD10 114 IMD10 package dimensions ...