Configuration - Siemens SIMATIC PCS 7 Manual

Interface module TPM 478-2
5.3

Configuration

Configuration,
general
5-8
The TPM 478-2 module represents an FM 456-4 interface module which pro-
vides options for connecting TELEPERM M I/O (see Figure 5-3).
TPM 478-2 is interconnected to FM 456-4 via ISA bus connector, mounted
on the side of the module. PCS7/TM system software uses this ISA bus to
exchange data with the TPM 478-2.
The two TELEPERM M I/O bus systems (A and B) are interconnected using
the two connectors of the TPM 478-2; the power supply for the logic is con-
nected separately (+5 V). The latter is connected to the backplane bus and
supplied by the master power supply of the PCS7 system.
TPM 478-2 periodically transfers I/O values sent to and received from then
I/O bus systems and controls them in a process image.
CPU
PS
416-2DP
Backplane bus
PS Power supply module
CPU 416-2DP CPU
Interface module
TPM 478-2
Figure 5-3 Configuration, general
FM
456-4
ISA bus (internal bus)
I/O bus A
Connecting TM I/O to PCS 7
C79000-G8076-C710-04
TPM
478-2
+5 V
I/O
bus B
I/O bus B
+5 V I/O bus A