CHAPTER 6: ACTUAL VALUES STATUSM60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 6-116CHANNEL 1 STATUS — This represents the receiver status of each channel. If the value is “OK,” teleprotection is enabled anddata is being received from the remote terminal; If the value is “FAIL,” teleprotection enabled and data is not being receivedfrom the remote terminal. If “n/a,” teleprotection is disabled.CHANNEL 1 LOST PACKETS — Data is transmitted to the remote terminals in data packets at a rate of two packets per cycle.The number of lost packets represents data packets lost in transmission; this count can be reset to 0 through theCOMMANDS CLEAR RECORDS menu.VALIDITY OF CHANNEL CONFIGURATION — This value displays the current state of the communications channel identificationcheck, and hence validity. If a remote relay ID does not match the programmed ID at the local relay, the “FAIL” messagedisplays. The “N/A” value appears if the local relay ID is set to a default value of “0,” the channel is failed, or if theteleprotection inputs/outputs are not enabled.6.3.20 Remaining connection statusACTUAL VALUES STATUS COMM STATUS REMAINING CONNECTThese values specify the remaining number of TCP connections still available for each protocol. The display depends on theoptions applicable to your device. Each time a connection is used, the remaining number of connections decrements.When released, the remaining number of connections increments. If no connection is made over the specific protocol, thenumber equals the maximum number available for the specific protocol.For example, the maximum number of Modbus TCP connections is 4. Once an EnerVista session is opened on a computerconnected to the UR over Ethernet, the Modbus TCP status shows 3. If the EnerVista application is closed, the Modbus TCPstatus shows 4.For the graphical front panel, the remaining connections refer to TCP connections only.MMS TCP — The number of IEC 61850 connections remaining.6.3.21 Parallel Redundancy Protocol (PRP)The Parallel Redundancy Protocol (PRP) defines a redundancy protocol for high availability in substation automationnetworks.ACTUAL VALUES STATUS PRP STATUS COMM STATUS REMAINING CONNECT MMS TCP(max 5)5Range: 0 to 5 MODBUS TCP (max 4)4Range: 0 to 4 DNP TCP(max 2)2Range: 0 to 2 IEC-104 TCP(max 2)2Range: 0 to 2 SFTP (max 4)4Range: 0 to 4 PRP STATUS Total Rx Port A:0Range: 0 to 4G, blank if PRP disabled Total Rx Port B:0Range: 0 to 4G, blank if PRP disabled Mismatches Port A:0Range: 0 to 4G, blank if PRP disabled Mismatches Port B:0Range: 0 to 4G, blank if PRP disabled Total Errors:0Range: 0 to 4G, blank if PRP disabled
