Switches at the upper side of connector:
BAUD rate
BAUD rate
Switch
Interface 5
Interface M
Interface L
1
2
3
19200
4800
300
OFF
OFF
OFF
38400
9600
600
OFF
OFF
ON
57600
19200
1200
OFF
ON
OFF
115200
38400
2400
ON
OFF
OFF
BAUD rate setting 19k2 (bps) is valid for all standard communication protocols, that do not
request special timings. If special protocols (small request-respond time required) are used
please note it in order.
NOTE! If there are problems with communication, try using higher speed setting. Some
manufacturer have different markings for B and A line. Try to switch A and B wires. See
http://en.wikipedia.org/wiki/RS-485
Connector pin table
MSTB
1
2
3
Description
GND
- (A)
+ (B)
Page:
Company:
Device:
Document:
Code:
Date:
12
User manual STRMUED1
Picture 5: RS485 BUS schematic
Picture 6: RS485 interface board appearance with switch settings
