FC 60 - Group I/O Definition (LMM01)

The group I/O definition function code defines the local I/O for an NLMM01 Logic Master Module. This function code pertains only to NLMM01 modules, and resides in fixed block three in the NLMM01 module. Up to 16 groups of eight points may be addressed per NLMM01 module through digital I/O modules. Points can be assigned from block numbers 128 to 255 for a total of 128 possible I/O per module. Each group of eight points may be assigned as inputs, outputs, logic station inputs or outputs, or may remain unassigned. Unassigned points can be used for logic functions.

 

 

 

Outputs:

Blk

Type

Description

N

B

0 = open circuit

1 = closed circuit

 

 

Specifications:

Spec

Tune

Default

Type

Range

Description

S1

N

0

I

0 - 147

Blocks 128 - 135 (group 0)

S2

N

0

I

0 - 147

Blocks 136 - 143 (group 1)

S3

N

0

I

0 - 147

Blocks 144 - 151 (group 2)

S4

N

0

I

0 - 147

Blocks 152 - 159 (group 3)

S5

N

0

I

0 - 147

Blocks 160 - 167 (group 4)

S6

N

0

I

0 - 147

Blocks 168 - 175 (group 5)

S7

N

0

I

0 - 147

Blocks 176 - 183 (group 6)

S8

N

0

I

0 - 147

Blocks 184 - 191 (group 7)

S9

N

0

I

0 - 147

Blocks 192 - 199 (group 8)

S10

N

0

I

0 - 147

Blocks 200 - 207 (group 9)

S11

N

0

I

0 - 147

Blocks 208 - 215 (group 10)

S12

N

0

I

0 - 147

Blocks 216 - 223 (group 11)

S13

N

0

I

0 - 147

Blocks 224 - 231 (group 12)

S14

N

0

I

0 - 147

Blocks 232 - 239 (group 13)

S15

N

0

I

0 - 147

Blocks 240 - 247 (group 14)

S16

N

0

I

0 - 147

Blocks 248 - 255 (group 15)

 

Explanation

 

NDSM03 and IMDSM05 Digital I/O Slave Modules provide I/O to the NLMM01 module. The NDSM03 module can handle two groups of eight inputs, and the IMDSM05 module can handle two groups of eight inputs or outputs. The IMDSM05 module also interfaces digital logic stations to the logic master module.  One IMDSM05 module can interface up to eight digital logic stations. Note that although the digital I/O module can interface up to eight stations, I/O from five fully loaded digital logic stations would fill the NLMM01 module almost to capacity, leaving only one group free (24 I/O points per station).

 

The 16 groups of I/O points use addresses zero to 15. For input and output groups, the group number and the address selected by dipswitches on the digital I/O module must match for each group. A digital I/O module interfacing to digital logic stations must use group address 14 or 15. These group addresses may not be used by any other I/O module. To specify group types, use the following equation.

 

where:

 

Y = Address of the digital logic station (zero to seven).

 

 

 

The range of block numbers in the unused group can be used for logic functions.

 

No logic functions may be assigned to the block numbers in the process inputs range. The block numbers referenced will be digital inputs from the field.

 

Any output or logic function may be assigned to block numbers in the process outputs range. If a block is an output configured to perform a logic function, then the output of that block will drive the hardware as if it were an output.

 

In digital logic station input (pulse), Y specifies the address of the logic station as set by dipswitches on the station. Pressing the logic station pushbutton generates a single pulse signal with a duration of ten milliseconds. One pulse generates each time the pushbutton is released and depressed.

 

In digital logic station output group A, Y specifies the address of the logic station as set by dipswitches on the station.  Any logic or output function may be assigned to blocks in this range. If a block defined as an output performs a logic function, then the output of that block drives the hardware as if it were an output.

 

In digital logic station output group B, Y specifies the address of the logic station as set by dipswitches on the station. Any logic or output function may be assigned to blocks in this range. If a block defined as an output performs a logic function, then the output of that block drives the hardware as if it were an output.

 

In digital logic station input (sustained), Y specifies the address of the logic station as set by dipswitches on the station.  Pressing the logic station pushbutton generates a sustained signal. While the pushbutton remains depressed, the signal remains sustained.

 

NOTES:

  1. The addresses are available to configurations that do not use digital I/O modules.

  2. When any specification (S1 through S16) is configured to access a digital logic station (tens digit equals one, two, three or four), then S15 and S16 can only be configured as a digital logic station I/O group.

 

 

Outputs

 

Define block numbers using the following equation:

 

block number = 127 + (group number ยด 8 + point number in group (1-9))

 

To read the output of a block, determine the block number using the equation shown above, then monitor that block from the operator interface device. The output of the block has meaning only if the point assigned to the block is defined. The output of the block will be a boolean signal representing the output value of the point assigned to it.