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29.6.20
UNIGATE
®
Fieldbus Gateway UNIGATE
®
CL - MPI V. 3.1
17
Deutschmann Automation GmbH & Co. KG
SSI-interface
6.2.4
Parameter Encoder monitoring (Check Encoder)
An encoder monitoring can be activated via the parameter "Check encoder", as long as the used
SSI-encoder supports this function. After the last read encoder bit it is verified if the data line is
still at Low for at least one bit. If the UNIGATE
®
does NOT detect this bit on Low, error 12 is
issued. For example it can detect a cable break or a not connected encoder. However, it can also
be a misconfigured bit length, or a too slow read out clock.
6.3 Hardware-wiring
The clock wires of the SSI-interface are placed onto the Tx-wires of the RS422-interface and the
data wires onto the Rx-wires at the UNIGATE
®
CL.
X1 (3pin + 4pin screw-plug-connector):
Pin no.
Name
Function at SSI
1
Rx 232
n. c.
2
Tx 232
n. c.
3
AP-GND
n. c.
4
Rx 422+
SSI DAT+
5
Rx 422-
SSI DAT-
6
Tx 422+
SSI CLK+
7
Tx 422-
SSI CLK-