Diagnostic Functions; Service Mode (Rs485 Mode) - Siko MSA501 Originalmontageanleitung

MSA501-S(SSI)

Diagnostic functions

8 Diagnostic functions
With the error case "sensor-tape gap exceeded" occurring, the RS422
NOTICE
driver's output will be switched high-impedance (signals A, /A, B, /B)
(only with LD version)! Downstream electronics might interpret this as an
error (e. g., cable break).
Various diagnostic functions have been integrated into MSA501.
A two-color LED signals the actual error states. The states are differenti-
ated via the LED's color and flashing rates. The signal is repeated after a
600 ms pause.
Error state
1. Sensor-tape gap
2. Plausibility absolute value
3. Speed check (v >5 m/s)
4. Sensor-tape alignment
5. Verify error EEPROM
6. Checksum error EEPROM
7. Read/write error EEPROM
If several error states occur at the same time, the relevant flashing signals
will be added to form a sequence (e. g., red LED flashes 5x -> error states
1 + 3).

9 Service mode (RS485 mode)

After putting the sensor MSA501 into Service mode via the "Config" (+UB)
input (see chapter 3), it can be parameterized or status information read
by means of a simple ASCII protocol via a terminal program.
For this purpose, connect the connection pins D+ and D- to a PC via a
RS485/RS232 converter. Transmission will be bidirectional.
MSA501-S(SSI) · Date 06.06.2016 · Art. No. 85615 · Mod. status 152/16
English
LED Flashing rate
red 1x
red 2x
red 4x
green 1x
green 2x
green 4x
green 8x
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