Genus G1 MARK II Users Manual
UM3010-2
File System Specification
The Terminal provides file systems on different hardware devices. Instead of using the
common alphabet notation for file system devices ( ‘A:’, ‘C:’ ), the Genus terminal identifies
the file storage devices as:
Storage Device Memory size Location
‘\flashdisk’
8 Mbytes std.
(64MB optional)
Seldom write, frequent read.
Used for firmware, user
applications, and application
data.
‘\ramdisk’ 2 Mbytes
High read/write usage. Data
is preserved through power
loss. Often used for
transaction (punch) storage.
‘\scratchdisk’ 5 Mbytes
High read/write usage.
Temporary file storage. Not
preserved through power
outage.
Relay Configuration
The relay port brings out the three relay connections at (common, normally open,
normally closed) +18 VDC, and ground. The common can optionally be connected to
Pin 5 to provide an on board voltage source. The current draw should not exceed
100mA. This +18 VDC source is useful when driving external buzzers, lamps, or other
low current, low voltage devices or a larger external relay, since it requires no external
power source.
The Relay Output configuration supports both sourcing and non-sourcing. The Relay
is a Form C contact relay rated for 1 amp @ 30V AC/DC.
Relay Port—Internal Power
Pin Function
1 Normally open contact
2 Common contact
3 Normally closed contact
4 Ground
5 +18 VDC
Revision B 10-30-07 8
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