Table of Contents
Advertisement
IP 240
3
Addressing
The IP 240 module reserves an address space of 16 bytes in the I/O areas. All data are exchanged
via these areas, which can be read out and written to by the S5 CPU. The data transfer is handled
by a standard function block. It is merely necessary to set the desired starting address and the
I/O area (P or Q area) via coding switches on switchbanks S2 and S3 on the module.
For address decoding, the IP 240 needs the memory-I/O select signal PESP in addition to the S5 bus
addresses A 0 to A 11.
X2
X4
X3
X5
X6
Note
The modules are delivered with a set starting address of 128 in the normal (P)
I/O area. Before start-up,
EWA 4NEB 811 6120-02a
S2
off on
Fig. 3-1. Locations of the Address Switches
make sure that no two modules reserve the same
S2: Setting the address space
S3
X1
S3: Setting the starting address
off on
Addressing
3-1
Advertisement
Table of Contents
