258    HC900 Process & Safety Controller User and Installation Manual  Revision 6 
    21 April 2017 
I 
I/O channel numbers ........................................................ 78 
I/O Expansion Network (C50 CPU only) ............................ 32 
I/O Expansion Network (C70R) ......................................... 34 
I/O expansion port ...................................................... 29, 30 
I/O Expansion Rack ........................................................... 24 
I/O expansion rack assembly ............................................ 73 
I/O implementation .......................................................... 34 
I/O Installation Procedures ............................................... 83 
I/O Module Diagnostics .................................................. 186 
I/O Module Installation ..................................... 1, 58, 66, 77 
I/O numbering assignments .............................................. 34 
I/O rack address ................................................................ 74 
I/O slot .............................................................................. 77 
I/O Wiring ......................................................................... 90 
I/O wiring shields .............................................................. 80 
Input/Output Modules ..................................................... 30 
Installation Tools ............................................................... 64 
IP address .......................................................................... 35 
E1 127 
E2 127 
I
RTD
 ..................................................................................... 91 
isolation capacitor ............................................................ 80 
J 
jumper .............................................................................. 84 
Jumper Comb .................................. 101, 105, 111, 115, 119 
Jumper Combs .................................................................. 81 
jumpers ............................................................................. 34 
K 
Kepware ............................................................................ 38 
key-tabs ............................................................................ 84 
L 
Label ................................................................................. 83 
labels ................................................................................. 78 
LAN ................................................................................... 35 
LED Indications on Ethernet Hub .................................... 188 
LED Indications on I/O Module ....................................... 185 
LED Indications on Main CPU .......................................... 173 
LED Indications on Scanner Module ............................... 181 
LED Indicators ................................................................. 180 
lithium battery .................................................................. 28 
Local Area Network........................................................... 35 
M 
Master Control Relay........................................................ 59 
Modbus mapping structure .............................................. 37 
MODE switch .................................................................. 159 
Mode Transitions ........................................................... 159 
Model number 
compatibility .................................................................. 8 
Modem ........................................................... 136, 137, 138 
Module Placement ........................................................... 77 
Module Wiring ................................................................. 90 
mounting racks ................................................................. 67 
N 
Null Modem Cable .......................................................... 132 
O 
OFFLINE Mode ................................................................ 157 
OHMs Inputs .................................................................... 91 
OPC ................................................................................... 38 
OPC server/client software .............................................. 38 
Open Modbus/TCP protocol............................................. 37 
Operating Characteristics ............................................... 153 
Operating Modes ........................................................... 153 
operator interface 
connect to controller ................................................. 129 
P 
Parallel processing ............................................................ 13 
PC hosts ............................................................................ 36 
PC Hosts ........................................................................... 36 
PC Modem Cable ............................................................ 133 
PDE ................................................................................... 35 
Peer Data Exchange .......................................................... 35 
Peer-to-peer communication ........................................... 35 
Personal Computer........................................................... 31 
PlantScape Vista Software ................................................ 38 
Power DOWN ................................................................. 153 
Power Down / Power Up ................................................ 153 
Power Status Module ................................................. 24, 25 
Power Supply...................................................26, 69, 70, 72 
Power transitions .......................................................... 153 
Power UP ....................................................................... 153 
PROGRAM Mode ............................................................ 156 
PV Input Types and Ranges ............................ 209, 212, 214