Analog I/O Functions (Cpm1/Cpm1A/Cpm2A Only); Compobus/S I/O Slave Functions (Cpm1A/Cpm2A Only); Compobus/S I/O Master Functions (Srm1(-V2) Only) - Omron CPM1 Programming Manual

2-8

Analog I/O Functions (CPM1/CPM1A/CPM2A Only)

2-9

CompoBus/S I/O Slave Functions (CPM1A/CPM2A Only)

2-10 CompoBus/S I/O Master Functions (SRM1(-V2) Only)

Maximum Number of Nodes
Slave Interrupts
Up to 3 Analog I/O Units can be connected to a CPM2A PC to provide analog I/O.
One Analog I/O Unit allows 2 analog inputs and 1 analog output. See 3-1 Analog
I/O Unit for details.
The CPM2A PC can function as a Slave to a CompoBus/S Master Unit (or SRM1
CompoBus/S Master Control Unit) when a CompoBus/S I/O Link Unit is con-
nected. See 3-2 CompoBus/S I/O Link Unit for details.
A maximum of either 16 or 32 CompoBus/S nodes may be connected.
Communications mode
High-speed mode g
Long-distance mode g
The communications mode and maximum number of nodes are set in the PC
Setup, as shown in the following table.
Word Bit(s)
DM 6603 00 to 03
04 to 07
08 to 15
Note When changes are made to these settings, always turn the power off and on
again to make the new setting effective.
Input bits in IR 000 to IR 007 and output bits in IR 010 to IR 017 are used as inter-
rupts for CompoBus/S I/O Terminals. The CompoBus/S I/O Terminal interrupts
(IN 0 to 15 and OUT 0 to 15) are allocated as indicated in the following table.
IN0 to IN15 are the node addresses for the Input Terminals and OUT0 to OUT15
are the node addresses for the Output Terminals.
No. of nodes set Communications response time
16 0.5 ms
32 0.8 ms
16 4.0 ms
32 6.0 ms
Function
Maximum number of CompoBus/S nodes
0: 32 nodes
1: 16 nodes
CompoBus/S communications mode
0: High-speed communications
1: Long-distance communications
Not used.
Section 2-10
Setting
0 or 1
0 or 1
00