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registers

Internal Registers

The * indicates positions occupied by the SCADALink A8D4 I/O module. This one module occupies five positions and acts as five modules-in-one. The module types are (AI4, AI4, DI8, DO8, and PI4) in that order.

DO, SW PWR, Relay, and DI are on-board digital signals that have been mapped to internal registers 4 through 7. These are not part of the I/O bus.

The supply voltage is in centi-Volts. Range is 0 to 3500. For example, 3000 = 30 V.

Coils: Digital Outputs
Register Description
1-3Reserved
4DO
5SW PWR
6Relay
007-016Reserved
017-024* Module #1 digital outputs
025-032* Reserved
033-040* Module #2 digital outputs
041-048* Reserved
049-056* Module #3 digital outputs
057-064* Reserved
065-072* Module #4 digital outputs
073-080* Reserved
081-088* Module #5, digital outputs or Pulse Clearing Register
PI1=81…PI4=84
to clear write 0 then write 1
089-096* Reserved
097-104Module #6 digital outputs
105-112Reserved
113-120Module #7 digital outputs
121-128Reserved
129-136Module #8 digital outputs
137-162Reserved
Status: Digital Inputs
Register Description
1-3Reserved
4DO
5SW PWR
6Relay
7DI
008-016Reserved
017-024* Module #1 digital inputs
025-032* Reserved
033-040* Module #2 digital inputs
041-048* Reserved
049-056* Module #3 digital inputs
057-064* Reserved
065-072* Module #4 digital inputs
073-080* Reserved
081-088* Module #5 digital inputs
089-096* Reserved
097-104Module #6 digital inputs
105-112Reserved
113-120Module #7 digital inputs
121-128Reserved
129-136Module #8 digital inputs
137-162Reserved
Holdings and Inputs: Analogs
Register Description
1-4Reserved
5Supply voltage
006-016Reserved
017-024* Module #1 analog inputs
025-032* Module #1 analog outputs
033-040* Module #2 analog inputs
041-048* Module #2 analog outputs
049-056* Module #3 analog inputs
057-064* Module #3 analog outputs
065-072* Module #4 analog inputs
073-080* Module #4 analog outputs
081-088“* Module #5 analog inputs or Pulse Inputs
Low address = counter low word,
High address = counter high word,
PI1=(81-82), PI2=(83-84), PI3=(85-86), PI4=(87-88)
089-096* Module #5 analog outputs
097-104Module #6 analog inputs
105-112Module #6 analog outputs
113-120Module #7 analog inputs
121-128Module #7 analog outputs
129-136Module #8 analog inputs
137-144Module #8 analog outputs
145-146Reserved
147Module #1 digital inputs
148Module #1 digital outputs
149Module #2 digital inputs
150Module #2 digital outputs
151Module #3 digital inputs
152Module #3 digital outputs
153Module #4 digital inputs
154Module #4 digital outputs
155Module #5 digital inputs
156Module #5 digital outputs
157Module #6 digital inputs
158Module #6 digital outputs
159Module #7 digital inputs
160Module #7 digital outputs
161Module #8 digital inputs
162Module #8 digital outputs
registers.txt · Last modified: 2016/08/25 19:37 by dmeier