17.7.17
UNIGATE
®
fieldbus gateway UNIGATE
®
MB - EtherCAT
®
V. 1.4
33
Deutschmann Automation GmbH & Co. KG
Implemented protocols in UNIGATE® MB
Here the content of the address 10009 is changed from 0 -> 1
In the following example only the "No. Of Points" is switched to 10.
Which means that now 10 Bits => 2 Byte are read out. This is also the reason why the fieldbus
length byte (2. fieldbus byte) at 0x0A increases by 1 Byte.
8.8.3.3
Example: Read multiple register FC3
RX Poll Delay = 0 is automatically set to 1 by the firmware.
Modbus-Request:
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Byte 8
Slave ID
Modbus
Function
StartAdr
High
StartAdr
Low
No. of
Points
High
No. of
Points
Low
CRC High
CRC Low
1
3
0x00
0x01
0
2
x
y
The CRC value is automatically calculated by the UNIGATE
®
The UNIGATE
®
sends out the request (RX Poll Retry = 0) one time via the RS interface, and waits a maxi-
mum of 250 ms (Modbus Timeout = 25) on the response.
Fieldbus Map Adr = 0 -> not activ
Summary of Contents for UNIGATE MB EtherCAT
Page 2: ...Manual Art No V4044E ...
Page 60: ......
