FC 88 - Digital Logic Station

The digital logic station (DLS) function code configures a digital logic station for use with a module. Each DLS station provides one group of eight inputs and two groups of eight outputs to a module.

Outputs:

Blk

Type

Description

N

B

Value of push button 1:  0 = open,  1 = closed

N+1

B

Value of push button 2:  0 = open,  1 = closed

N+2

B

Value of push button 3:  0 = open,  1 = closed

N+3

B

Value of push button 4:  0 = open,  1 = closed

N+4

B

Value of push button 5:  0 = open,  1 = closed

N+5

B

Value of push button 6:  0 = open,  1 = closed

N+6

B

Value of push button 7:  0 = open,  1 = closed

N+7

B

Value of push button 8:  0 = open,  1 = closed

N+8

B

DLS Flag:                        0 = good,  1 = bad

 

NOTE: The push button outputs are pulsed or maintained depending on the

digital logic station address specified with S1. An address of 0 to 7 provides

a pulsed output. An address of 100 to 107 provides a maintained output.

 

Specifications:

Spec

Tune

Default

Type

Range

Description

S1

N

0

I

0 - 107

Logic station address:

0 - 7 = pulse

100 - 107 = maintained

S2

N

0

I

Note 1

Block address of logic station interface.

S3

N

0

I

Note 1

Block address, output 0, group A

S4

N

0

I

Note 1

Block address, output 1, group A

S5

N

0

I

Note 1

Block address, output 2, group A

S6

N

0

I

Note 1

Block address, output 3, group A

S7

N

0

I

Note 1

Block address, output 4, group A

S8

N

0

I

Note 1

Block address, output 5, group A

S9

N

0

I

Note 1

Block address, output 6, group A

S10

N

0

I

Note 1

Block address, output 7, group A

S11

N

0

I

Note 1

Block address, output 0, group B

S12

N

0

I

Note 1

Block address, output 1, group B

S13

N

0

I

Note 1

Block address, output 2, group B

S14

N

0

I

Note 1

Block address, output 3, group B

S15

N

0

I

Note 1

Block address, output 4, group B

S16

N

0

I

Note 1

Block address, output 5, group B

S17

N

0

I

Note 1

Block address, output 6, group B

S18

N

0

I

Note 1

Block address, output 7, group B

 

NOTES:

1. Maximum values are:

1023 for IMLMM02

2046 for NMFC01/02, IMMFC05, and IMMPC01

9998 for IMMFC03/04, IMMFP01/02/03/04, and BRC-100/200/300

31998 for BRC-400

 

88.1 Explanation

 

The internal logic of the digital logic station provides either a one cycle pulse or a maintained input (as long as the push button is depressed) for all eight push buttons. Specification S1 selects the input type for the entire group.

 

Each push button has two LEDs associated with it, but independent from it. Thus, the combination can be used for either related events or independently.

 

If parallel control is desired from a console, the digital logic station can be configured in combination with a remote control

memory (function code 62) or device driver (function code 123) block. Control is gained from the station or the console.

 

 

88.1.1 Specifications

 

S1 - LSADR

Specification S1 is the digital logic station address. Each DLS station has an address which is set with a three position dipswitch on the station. Valid hardware addresses are zero through seven. With this specification, specify the address as zero to seven or 100 to 107, depending on the type of push button outputs desired.

 

If the station is addressed from zero to seven (true address), the push button outputs are a pulse output. When a push button is pressed, the associated output goes to a one for one cycle, then returns to zero.

 

If the station is addressed from 100 to 107 (true address plus 100), the push button outputs are maintained. When a push button is pressed, the associated output goes to a logic 1 and remains there until the push button is released.

 

S2 - LSI

Specification S2 is the block address of logic station interface. This specification identifies the function code 87 block providing the interface between the digital logic station and its IMDSM05 module.

 

S3 to S18 -

A0 to B7

 

Specifications S3 through S18 are the block addresses of the output values for output groups A and B. These values are displayed on the LEDs on the front plate of the digital logic station. A logic 0 output turns the LED off, and a logic 1 output lights the LED.

 

 

 

88.1.2 Outputs

 

N through N+7

Outputs N through N+7 are the values of push button inputs one through eight.

0 = open

1 = closed

 

N through N+7

Output N+8 is the digital logic station status flag.

0 = good

1 = bad

 

 

 

88.2 Applications

 

Figure 88-1 shows a typical configuration of function code 88 used in conjunction with function codes 87 and 35.