GE GFK-0787B Manuel D’Utilisation
1
1-9
GFK-0787B
Chapter 1 Introduction
Number of I/O Points in a GMR System
The I/O capacity of the system depends on whether the CPU is a model 788 or model 789. For
most applications, these limits will not be reached. If you need help estimating I/O sizes for a
large application, contact GE Fanuc at 1-800-828-5747.
most applications, these limits will not be reached. If you need help estimating I/O sizes for a
large application, contact GE Fanuc at 1-800-828-5747.
CPU Model
Total Discrete
Physical I/O
Maximum
Number of
Voted Inputs
Maximum
Number of
Voted Outputs
Maximum Total
Voted I//O
788
352
112
80
100
798
12288
2048
2048
4096
Non-GMR I/O
: Non-GMR I/O is I/O that is not included in the GMR configuration. The
amount of non-GMR I/O that can be used depends on the amount of GMR I/O present and
the CPU memory capacity. The tables below show how much memory is available for
non-GMR I/O (main part of tables) for given numbers of GMR inputs and GMR outputs. In
the equations, the GMR Inputs and GMR Outputs are the actual number of I/O configured
with the programming software.
the CPU memory capacity. The tables below show how much memory is available for
non-GMR I/O (main part of tables) for given numbers of GMR inputs and GMR outputs. In
the equations, the GMR Inputs and GMR Outputs are the actual number of I/O configured
with the programming software.
Number of Non-GMR I/O Available for the 788 CPU
Number of
Voted GMR
Number of Redundant GMR Outputs
Voted GMR
Inputs
0
16
32
48
64
80
96
0
352
288
224
160
96
32
16
304
240
176
112
48
32
256
192
128
64
0
48
208
144
80
16
64
160
96
32
80
112
48
96
64
0
112
16
Number of Non-GMR I/O Available for the 789 CPU
These numbers are determined by the limits of physical I/O based on the Logicmaster
configuration and table size limitations based on the manner in which GMR maps I/O into
multiple locations in the I/O tables (this is explained in chapter 4).
configuration and table size limitations based on the manner in which GMR maps I/O into
multiple locations in the I/O tables (this is explained in chapter 4).
Number
of Voted
of Voted
GMR
Number of Redundant GMR Outputs
of Voted
GMR
Inputs
0
256
512
768
1024
1280
1536
1792
2048
0
12288
11264
10240
9216
8192
7168
6144
5120
4096
256
11264
10496
9472
8448
7424
6400
5376
4352
3328
512
10240
9728
8704
7680
6656
5632
4608
3584
2560
768
9216
8960
7936
6912
5888
4864
3840
2816
1792
1024
8192
7936
7168
6144
5120
4096
3072
2048
1024
1280
7168
6912
6400
5376
4352
3328
2304
1280
256
1536
6144
5888
5632
4608
3584
2560
1536
512
1792
5120
4864
4608
3840
2816
1792
768
2048
4096
3840
3584
3072
2048
1024