SBC PCD1 Series User Manual

Saia-Burgess Controls AG
Manual Manual PCD 1 / PCD 2 Series │ Document 26 / 737 EN22 │ 2013-11-26
CPUs and expansion housings
3-19
Expansion housings and bus cables
3
3.6 Expansion housings and bus cables
The PCD2.M120/M150/M170/M480 can be expanded with PCD2, PCD3 or PCD4
components, and additional module sockets are provided:
Type M120/M150 M170 M480
Maximum number of inputs/outputs or
I/Omodulesocketsforthesystem:
WhenPCD2componentsusedexclusively 255
1)2)
16
WhenexpandedwithPCD3components 255
1)2)
16
510
1)2)
32
1023
1)2)
64
WhenexpandedwithPCD4components 255
2)3)
16
1)UsingdigitalI/OmodulesPCD2/3.E16xorA46xwith16I/Oseach
2) On all PCD2s, address 255 is reserved for the watchdog; on the M170, address 511 is also reserved for this
purpose.TheI/Osreservedforthewatchdogcannotbeusedbytheuser,andnoanalogueorHmodulesmaybe
attachedtosocketswithbaseaddress240(andontheM170,496also)
3)NotallPCD4I/OmodulesaresuitableforusewithPCD2CPUs;pleaserefertothesectionon“Expansionwith
PCD4components”

SBC PCD1 Series Specifications

General

Brand	SBC
Model	PCD1 Series
Category	Controller
Language	English