D20/D200 Technical Overview
GE Grid Solutions
86
PRPI-019-3.00-10
GE Information
5.4 What is the I/O capacity of a D20 system?
The D20 can support up to:
−
One redundant D.20 channel, supporting up to 120 I/O peripherals
−
Seven RS-232 or RS-485 ports
−
Two Ethernet ports
For example:
On each of its two D.20 ports, the D20 can support the following:
Example
I/O Peripherals
Providing
A
120 - D20 S
7680 status inputs (120 x 64)
B
120 - D20 A
1920 analog inputs (120 x 16)
C
100 - D20 A
20 - D20 S
1600 analog inputs (100 x 16) and
1280 status inputs (20 x 64)
5.5 What is the I/O capacity of a D200 system?
The D200 can support up to:
−
Four D.20 ports (two per main processor), supporting up to 240 I/O peripherals
−
49 RS-232 or RS-485 ports (seven per main processor)
−
Two Ethernet ports
For example:
On each of its four D.20 ports, the D200 can support the following:
Example
I/O Peripherals
Providing
A
240 - D20 S
15,360 status inputs (240 x 64)
B
240 - D20 A
3840 analog inputs (240 x 16)
C
200 - D20 A
40 - D20 S
3200 analog inputs (200 x 16) and
2560 status inputs (40 x 64)
5.6 What are the added features of the ME II Main Processor
over the ME Main Processor?
Equipped with a D20ME II Main Processor, the D20/D200 can support RS-485 communications
on all seven communications ports. End devices can be supported at distances up to 4000 feet,
and the D20/200 can support up to 32 devices on each communication port, without the need for
external converters.
