Campbell Scientific CR1000KD CR1000 Measurement and Control System - Page 539
-mV range 250-us integration
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Appendix B. Status Table and Settings 13 Displays 0 until a SlowSequence scan runs. 14 Security can be changed via DeviceConfig, external keyboard / display, PakBusGraph, Status table, and SetSecurity() instruction. Shows -1 if the security code has not been given, or if it has been deactivated. 15 In general, CommsActive is set to TRUE when receiving incoming characters, independent of the protocol. It is set to FALSE after a 40 second timeout during which no incoming characters are processed, or when the protocol is PakBus and the serial packet protocol on the COM port specifies off line. Note, therefore, that for protocols other than PakBus that are serviced by the SerialIO() instruction (ModBus, DNP3, generic protocols), CommsActive will remain TRUE as long as characters are received at a rate faster than every 40 seconds. In addition, PPP will activate its COM port with a 31 minute timeout. When PPP closes, it will cancel the timeout and set CommsActive as FALSE. Further, if there is a dialing process going on, CommsActive is set to TRUE. One other event that causes ComME to be active is the GOES instruction. In conclusion, the name "CommsActive" can be misleading. For example, if there are no incoming characters to activate the 40-second timeout during which time CommsActive is set to TRUE and only outputs data, then CommsActive is not set to TRUE. For protocols other than PakBus,the active TRUE lingers for 40 seconds after the last incoming characters are processed. For PPP, the COM port is always TRUE so long as PPP is open. 16 When the SerialOpen() instruction is used, CommsConfig is loaded with the format parameter of that instruction. PakBus communication can occur concurrently on the same port if the port was previously opened (in the case of the CP UARTS) for PakBus, or if the port is always open (CS I/O 9 pin, and RS-232) for PakBus, the code is 4. 17 The value shown is the initial baud rate the CR1000 will use. A negative value will allow the CR1000 to autobaud but will dictate at which baud tate to begin. When doing autobaud, the CR1000 measure the baudrate, then sets the comm port to that baud. 18 A list of up to eight PB addresses for routers that can act as central routers. See Device Configuration Utility software for more information. 19 (1) 5000-mV range 250-us integration (2) 2500-mV range 250-us integration (3) 250-mV range 250-us integration (4) 25-mV range 250-us integration (5) 7_5-mV range 250-us integration (6) 2.5-mV range 250-uS integration (7) 5000 mV range 60-Hz integration (8) 2500-mV range 60-Hz integration (9) 250-mV range 60-Hz integration (10) 25-mV range 60-Hz integration (11) 7_5-mV range 60-Hz integration (12) 2.5-mV range 60-Hz integration (13) 5000-mV range 50-Hz integration (14) 2500-mV range 50-Hz integration (15) 250-mV range 50-Hz integration (16) 25-mV range 50-Hz integration (17) 7_5-mV range 50-Hz integration (18) 2.5-mV range 50-Hz integration 539