AXIOMTEK AX5420P, User Manual

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AX5420P & AX5425P User ’ s Manual
Register Format and Description
18
Form A Relay
NO
CM
Each Form A relay only has two contacts: NO(Normally Open)
and CM(Common). They act like the CM and NO posts of Form
C relay. A low (0) control bit separates the CM and NO posts. A
high (1) control bit causes the CM and NO post to make contact.
The following table lists the contact arrangement for Form A
relay.
Control Bit (RO1-RO16) Contact (CM-NO)
0 Open
1 Short
NOTE:
On power-up or reset, the CM and NO contacts are
open.