Local Expansion Modules are connected directly via a Ribbon cable to either a Comfort Main board, or Slave. Only 1 LEM can be connected to a Comfort or Slave There are 3 types of LEMs;
LEM01-M2 with 8 inputs and 8 Outputs

LEM01 Inputs and Outputs are numbered as follows

LEM02 Inputs are numbered as follows

LEM03 Inputs are numbered as follows
If an LEM03 is connected to Comfort, Slaves cannot be connected, hence a Comfort + SEM03 is limited to 24 Inputs and 8 outputs
From SEM 7.118 firmware ionwards, LEM03 can be connected to the SEM with the higest ID in the system. Only 1 LEM03 is alllowed per system
Installation Instructions for the LEMs are in the Comfort Intsllation Manual which can be downloaded from the Cytech website
https://www.cytech.biz/installation_manual.html
LEM01-M2 with 8 inputs and 8 Outputs

LEM01 Inputs and Outputs are numbered as follows
- 9 to 16 when connected to Comfort
- 25 to 32 when connected to Slave #1
- 41 to 48 when connected to Slave #2
- 57 to 64 when connected to Slave #3

LEM02 Inputs are numbered as follows
- 9 to 16 when connected to Comfort
- 25 to 32 when connected to Slave #1
- 41 to 48 when connected to Slave #2
- 57 to 64 when connected to Slave #3

LEM03 Inputs are numbered as follows
- 9 to 24 when connected to Comfort, and no Slaves connected
- 25 to 40 when connected to SEM #1, and no Slaves at a higher ID connected
- 41 to 56 when connected to SEM #2, and no Slaves at a higher ID connected
- 57 to 72 when connected to SEM #3, and no Slaves at a higher ID connected
- 73 to 88 when connected to SEM #4, and no Slaves at a higher ID connected
If an LEM03 is connected to Comfort, Slaves cannot be connected, hence a Comfort + SEM03 is limited to 24 Inputs and 8 outputs
From SEM 7.118 firmware ionwards, LEM03 can be connected to the SEM with the higest ID in the system. Only 1 LEM03 is alllowed per system
Installation Instructions for the LEMs are in the Comfort Intsllation Manual which can be downloaded from the Cytech website
https://www.cytech.biz/installation_manual.html