FC 77 - Analog Point Service Status (NAMM02 - IMAMM03)

NAMM02 and IMAMM03 Analog Master Modules have up to 64 inputs. Each of these inputs have a service status that identifies the point as in service or out of service. The analog point service status block can save and restore the service status of individual points. It saves a point's service status on floppy disk at an operator interface station. Each specification reflects the service status of a point on the I/O module as shown in the specifications table. Logic 0 equals point in service; logic 1 equals point not in service.

 

Function code 77 resides in fixed block 89 in the analog master module and provides no useful outputs.

 

Outputs:

Blk

Type

Description

89

R

No usable output

 

 

Specifications:

Spec

Tune

Default

Type

Range

Description

S1

N

0

I

0 - 255

I/O module 0, point service status

S2

N

0

I

0 - 255

I/O module 1, point service status

S3

N

0

I

0 - 255

I/O module 2, point service status

S4

N

0

I

0 - 255

I/O module 3, point service status

S5

N

0

I

0 - 255

I/O module 4, point service status

S6

N

0

I

0 - 255

I/O module 5, point service status

S7

N

0

I

0 - 255

I/O module 6, point service status

S8

N

0

I

0 - 255

I/O module 7, point service status

 

 

 

77.1  Explanation

 

The service status of each point is bitmapped into the service status of the corresponding I/O module. Each specification in the block is the decimal representation of an eight-bit map. The map format is such that the most significant bit (MSB) corresponds to point number seven on the I/O module, and the least significant bit (LSB) corresponds to point number zero on the I/O module. Figure 77-1 illustrates this configuration.

 

NOTE: The display depends on the last calibration (single point or whole I/O module).