7 managing slave index in an hsl network – ADLINK PCI-7856 User Manual
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HSL Slave Modules
4.2.7
Managing Slave Index in an HSL Network
Before you proceed
Before powering on the slave modules, users have to adjust the 
DIP switch. For this step, please refer to Section 4.2.3 to know 
how to do this. Please specifically note the following.
1. One master controller can connect up to 63 slave
indexes.
2. The more compact slave address in HSL network, the
much more efficient the HSL system can work.
3. Discrete I/O and relay module rule
4. Observe the analog I/O and thermocouple module rule.
5. Special Rule: If you will install only one HSL-AI16AO2-
M-VV or HSLAI16AO2-M-AV and the DIP switch is set to 
1 (HSL-AI16AO2-M-VV/AV only supports full duplex 
mode), the occupied indexes will be 1 and 3. You must 
assign the parameter “MOD_No” of 
APS_set_field_bus_slave_param() as 4 to ensure cor-
rect communication. 
Examples
Module
Slave Index 
Occupation
Transmission
Mode
Transmission
Speed
HSL-DI16DO16-M-NN/NP/PN/PP
1 (Any address)
Full Duplex (Fixed)
6 Mbps (Fixed)
HSL-DI16DO16-DB-NN/NP/PN/PP
HSL-R8DI16-M-N/P
HSL-DI32-M-N/P
2 (Consecutive from
odd number)
HSL-DI32-DB-N/P
HSL-DO32-M-N/P
HSL-DO32-DB-N/P
Module
Slave Index 
Occupation
Transmission
Mode
Transmission
Speed
HSL-AI16AO2-M-VV
2 (Leap number)
Full Duplex (Fixed)
3/6/12 Mbps
Selectable
HSL-AI16AO2-M-AV
HSL-AO4-U