Messenger Series - Industrial Control Links

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S140Destination AddressAs the name implies, this register specifies the ultimate destination for a modem’s data.Different network topologies dictate the configuration of S140:PMP : Master S140=65535, Remote S140=1PTP : Master S140=UA of Remote, Remote S140=1P2P : Master S140=65535, S140 of each (of 2 / pair) Remote modem is the UA of the otherE2E : S140 of all modems=65535 (broadcast)With one or more Repeaters in the system, a network’s throughput is divided in half. Exercisingthe option of back-to-back ‘Repeaters’ - which requires 2 modems at a ‘Repeater’ site -eliminates the division of bandwidth.If there is more than one Repeater in a network, the Repeaters should be ‘registered’. SeeAT&H1 Repeater Registration for how to accomplish this.S141Repeaters Y/NThis register informs - and applies only to - the Master as to the presence of any Repeater(s)in the network.Values0 no repeater1 1 or more repeatersS142Serial Channel ModeThis register defines the physical serial interface which will be used for data communications.Values0 RS-232 interface1 half-duplex RS-4852 full-duplex RS-485Note: When placed into Command Mode, the module will communicate via the RS-232interface at 9600bps, 8N1.Copyright © 2012 Industrial Control Links, Inc. All Rights Reserved 36
S143Sleep ModeThis register applies only to Remote (i.e. not Master) modems, and determines if the Remoteshould remain active continuously (S143=0, default), or enter a timer-based sleep mode.Sleep Mode 1When status register S143 is set to a value of 1, the unit will use the registers S144 and S145 todetermine how long a unit will remain awake when idle, or if the unit has gone to sleep, howlong it will sleep for.In this mode, data will be monitored on the serial port and the RF link. If no data is beingtransmitted or received after an amount of time specified by S145 (Wake Time), the unit willbegin to sleep for the amount of time determined by register S144 (Sleep Time).If data is detected on the local serial port, the unit will immediately wake up.Sleep Mode 2This mode is similar to Sleep mode 1, except , data will be monitored only on the serial port. Ifno data is being transmitted or received after an amount of time specified by S145 (WakeTime), the unit will begin to sleep for the amount of time determined by register S144 (SleepTime).Sniff Mode 1When status register S143 is set to a value of 3, the unit will monitor all data from the serialand RF link. Upon wake up, the unit will begin to try to find a master or repeater to synchronizeto. The amount of time the unit tries to find a master is determined by the number of hops,rather than time. (Time can be calculated by multiplying the number of hops in S237 and thehop interval specified in register S109).If a master is found, the unit will stay awake for at least the time specified by register S145(Wake Time). If there is data to transmit, the unit will stay awake until all data has beentransmitted. If a master or repeater is not found, the unit will go to sleep for S144 (Sleep Time)seconds. The sniffing cycle is very brief.If data is detected on the local serial port, the unit will immediately wake up.Sniff Mode 2When status register S143 is set to a value of 4, the unit works the same way as sniff mode 1,except, the unit will monitor all data from only the serial port.Sniff Mode 3When status register S143 is set to a value of 5, the unit works the same way as sniff mode 1and will monitor all data from both the serial and RF link. The difference is, if no master isfound, all data will be discarded.Copyright © 2012 Industrial Control Links, Inc. All Rights Reserved 37
Page 1: Messenger SeriesNano Data RadiosTec
Page 6: ContentsCopyright Notice 2Acknowled
Page 10 and 11: Front Panel FeaturesFamiliarization
Page 12 and 13: 3.7"InstallationThis section descri
Page 14 and 15: Power WiringDC PowerMessenger Nano
Page 16 and 17: Rx87654321TxRS-232 and RS-485 Seria
Page 18 and 19: RS-485 Serial CommunicationsRS-485
Page 20 and 21: ConfigurationCommand ModeIn this mo
Page 22 and 23: To use these commands, be sure to p
Page 24 and 25: InIdentificationThe I command retur
Page 26 and 27: Having entered ‘1’, the modem p
Page 28 and 29: S101Operating ModeThe operating mod
Page 31 and 32: S109Hop IntervalThis register is ef
Page 33 and 34: S115Repeat IntervalS115 determines
Page 35: The default setting is 0: The modem
Page 39 and 40: S145Wake TimeApplies only to Remote
Page 41 and 42: Values0 No FEC1 Hamming (7,4)2 Hamm
Page 43 and 44: S177Binary Encryption KeyWhen using
Page 45 and 46: Radio System InstallationThere are
Page 47 and 48: Installation of Antenna System Comp
Page 49 and 50: Appendix A: AT Command Quick Refere
Page 51 and 52: Appendix B: Settings (S) RegistersT
Page 53 and 54: S141S142S143Repeater Existence0 *no
Page 55 and 56: Copyright © 2012 Industrial Contro

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