MSA501-S(RS485)
24
SIKONETZ3 interface
Error messages
Hex TX RX S
P
82
-
3
-
-
83
-
3
-
-
85
-
3
-
-
Synchronization
The synchronization of a byte or a telegram is established by a "timeout":
The time between the individual bytes of an telegram must not exceed the
value of 10 ms. If an addressed sensor does not respond, the master may
send a new telegram not earlier than after 30 ms.
Example of a telegram
Master requests position value from sensor 7.
Master sends (hex): 87 16 91
short telegram to address 7; command 16h; check byte 91h
Sensor answers (hex): 07 16 03 02 00 10
long telegram from address 7; command 16h; value 000203h = 515; check
sum 10h.
Application example for MSA501 with drive controller
Fig. 1: Example with drive controller
MSA501-S(RS485) · Date 06.06.2016 · Art. No. 85614 · Mod. status 152/16
R
Function
Data transmission error checksum
-
-
Unknown or forbidden command
Forbidden value (parameter programming)
-
Drive control system
+UB
GND
D+
D-
A
/A
B
/B
Config
English
~
SIKO-
NETZ3-
Master
Incre-
mental
input
GND
+UB