13.4.9 Read Status – Function 03 – Request
Register Address
This is used to address the “start” channel to be read for example the first channel in the
system “channel 1” would be register address 00 00
To read the port register value the port offset is used to define the start address.
To read the contact, alarm or pushbutton status then the start address is defined by the channel
status offset.
If an offset has been set then this would offset the default start register.
For input status read register 0-255 with register 0 being Channel 1.
For alarm status read register 300-555 with register 300 being Channel 1.
For PB group status use the following registers:
Pushbutton Register Address
Lamp Test 256
Acknowledge 257
Reset 258
Mute 259
System Test 260
First Reset 261
Lamp test Audible 262
Sleep 263
Inhibit 264
Unattended 265
Auto Ack Disable 266
Number of Registers
This represents the number of Registers requested(read) this can be up to 125 register at once.
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