G&L MMC-A2, Hardware Manual

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MMC 32In/32Out Option Module
G & L Motion Control Inc. MMC Hardware Manual 145
10 MMC 32In/32Out Option Module
10.1 Introduction
The MMC 32In/32 Out Option Module (shown in Figure 10-1 ) contains two
44-pin HD male D-sub connectors, labeled “GEN I/O A”, and “GEN I/O B”.
Each connector provides 16 sink or source (user selectable, in groups of 8)
24 Vdc inputs. In addition, the first input of each group of 8 can be
programmed to provide a processor interrupt on either a low-to-high or high-
to-low input transition. Each connector also provides 16 source-only 24 Vdc
outputs. Each output is capable of sourcing 250 ma, and is protected from
both short circuits as well as overloads.
The Diagnostic light at the top of the module (labeled “DIAG”), turns on
briefly when power is first applied, and then turns off indicating that the
module has passed it’s diagnostic tests. If the light stays on after power up, it
is defective and should be replaced.