Parker Vansco - Page 36

26 VMM2404
Inputs
3.2.3.2. Addressing Digital Input Connections
These inputs are used to set the system address on the module such that it is
unique among all other modules in the system. The maximum allowable addresses
in a VMM system is 31.
The inputs are all active low inputs with internal pull-up resistors. The inputs are
pulsed to ensure that a floating pin is read as inactive by the module.
The addressing arrangement is shown in the following table, which shows the
required inputs that need to be active (connected to ground), and those that are
floating.
VMM system addressing (active=1, floating=0)
Address Inputs
5
4
3
2
1
VMM address
0
0
0
0
0
VMM1
0
0
0
0
1
VMM2
0
0
0
1
0
VMM3
0
0
0
1
1
VMM4
0
0
1
0
0
VMM5
|
|
|
|
|
|
1
1
1
1
0
VMM31
Note: Address 32 is reserved and therefore may not be used in a system
design.