9.2.1  Preparation .............................................................................................................................. 131 
9.2.2  Initial Observations ............................................................................................................... 132 
9.2.3  Verifying the Analog Output .............................................................................................. 132 
9.2.4  Verifying the Alarm Indicators and Relays ................................................................... 133 
9.2.5  Verifying the RS 232 or USB Communications ........................................................... 136 
9.2.6  Conclusion ............................................................................................................................... 136 
9.3  Installation ............................................................................................................................................. 138 
9.3.1  Verifying the AC Power Supply Voltage and the Serial Numbers ........................ 138 
9.3.2  Installing the Enclosure ....................................................................................................... 138 
9.3.3  Installing the Cable Conduits ............................................................................................ 138 
9.3.4  Installing the Supervisory Link Cable ............................................................................. 139 
9.3.5  Installing the Analog Output Cable (Optional) ............................................................. 139 
9.3.6  Installing the Alarms Cable (Optional) ............................................................................ 140 
9.3.7  Installing the AC Power Supply Cable ............................................................................ 140 
9.3.8  Verifying the Operation ....................................................................................................... 141 
9.3.9  Verifying the Analog Outputs ............................................................................................ 141 
9.3.10  Verifying the Alarm Indicators and Alarm Relays ...................................................... 141 
9.3.11  Verifying the Supervisory Link Communications ....................................................... 141 
9.3.12  Conclusion ............................................................................................................................... 141 
9.4  Other Installations .............................................................................................................................. 142 
10  COMMUNICATIONS & NETWORKING................................................................................... 143 
10.1 Communications  for  Hydran  201R  Model  i  or  Hydran  201i  System,  Using  a 
Supervisory Link ............................................................................................................................................ 143 
10.1.1  TDM Pulse ................................................................................................................................. 144 
10.2 Communications in  a  Network,  using an RS-485  Local Network  Link and Hydran 
201Ci controllers ........................................................................................................................................... 145 
10.3 Communications with a Host Computer .................................................................................... 146 
10.3.1  Local Communications using USB communication link .......................................... 147 
10.3.2  Local Communications using RS-485 serial communication link ........................ 147 
10.3.3  Remote Communications (via Modem) ......................................................................... 148 
10.4 Communication Protocol ................................................................................................................. 151 
10.5 Local Network Installation ............................................................................................................... 152 
10.5.1  Installing  an  RS-485  Local  Network  Link  between  Hydran  201  Tis  or 
between 201 Ci Controllers ............................................................................................... 152