CHAPTER 5: SETTINGS INPUTS/OUTPUTSN60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL 5-2355Figure 5-119: Single-channel open-loop configurationIn this architecture, Devices 1 and 3 do not communicate directly. Therefore, Device 2 must act as a ‘bridge’. The followingsettings are applied:UR IEC 1:DIRECT OUT 2 OPERAND: "HYB POTT TX1"DIRECT INPUT 5 DEVICE ID: "2"DIRECT INPUT 5 BIT NUMBER: "2" (this is a message from IED 2)DIRECT INPUT 6 DEVICE ID: "2"DIRECT INPUT 6 BIT NUMBER: "4" (effectively, this is a message from IED 3)UR IED 3:DIRECT OUT 2 OPERAND: "HYB POTT TX1"DIRECT INPUT 5 DEVICE ID: "2"DIRECT INPUT 5 BIT NUMBER: "2" (this is a message from IED 2)DIRECT INPUT 6 DEVICE ID: "2"DIRECT INPUT 6 BIT NUMBER: "3" (effectively, this is a message from IED 1)UR IED 2:DIRECT INPUT 5 DEVICE ID: "1"DIRECT INPUT 5 BIT NUMBER: "2"DIRECT INPUT 6 DEVICE ID: "3"DIRECT INPUT 6 BIT NUMBER: "2"DIRECT OUT 2 OPERAND: "HYB POTT TX1"DIRECT OUT 3 OPERAND: "DIRECT INPUT 5" (forward a message from 1 to 3)DIRECT OUT 4 OPERAND: "DIRECT INPUT 6" (forward a message from 3 to 1)The figure shows the signal flow among the three IEDs.842714A1.CDRUR IED 1TX1RX1UR IED 2RX2TX2RX1TX1UR IED 3RX1TX1
