16.07.2015, 06:40
1. On/off commands from LM are fast, minimum polling time for reading can be set to 1 second.
2. Each port can sink up to 20mA of current which is fine for 24V relays. For example, widely used Schrack relay ratings are: 16.7mA for 16A/250VAC coil or 8.3mA for 6A/250VAC coil.
As for temperature sensors conversion time is the main issue. It can be minimized by reading lower resolution values which are more than enough for standard applications like HVAC.
2. Each port can sink up to 20mA of current which is fine for 24V relays. For example, widely used Schrack relay ratings are: 16.7mA for 16A/250VAC coil or 8.3mA for 6A/250VAC coil.
As for temperature sensors conversion time is the main issue. It can be minimized by reading lower resolution values which are more than enough for standard applications like HVAC.