ZMIO300 Series Hardware Manual Version 1.8
18
3.1.2.4
Interface Description
Dial code switch definition
8- bit dial code switch integrates a 120Ω ended-terminal resistance between CANH
and CANL, no need to connect externally. The first 6 bits are dialed OFF, the
relative value is 0, when they are dialed ON, the relative value is 1. When the code
8 is dialed ON, the resistor is conducted.
Address combination value = dial code 4 × 8 + dial code 3 × 4 + dial code 2 × 2 +
dial code 1 × 1. Speed combination value = dial code 6 × 2 + dial code 5 × 1.
The dial code switch must be configured before the power is on, it’s not valid to
dial after the power is on, it will take effect when power-on again.
Start number configuration
Dial code 1-4 are used to configure address combination value through dial switch,
then the controller set relative IO and AIO start number of expansion module
according to this address combination value.
Dial code
Name
Description
1
ID 0
CAN address dial code
2
ID 1
CAN address dial code
3
ID 2
CAN address dial code
4
ID 3
CAN address dial code
5
ID 4
CAN speed dial code
6
ID 5
CAN speed dial code
7
NC
Reserved
8
120Ω
CAN 120Ω resistor dial code
Address combination
value
Start IO
number
Start AD
number
Start DA
number
0
16
8
4
