E.S.A.M. unicenter s.r.l.

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Ilene Roberts
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1 RS485 serial interface ESAM protocol The Network Analyzers Exx00 can communicate with three protocols : - MODBUS RTU (see specific manual) - ESAM (proprietary protocol, described in this manual) - METASYS NBUS (see specific manual) Serial port: - RS485 HALF DUPLEX - BAUD RATE : are 00,400,4800,9600,900 -The parameters N (no parity), start bit 8 data bit and stop bit are fixed. Terminals: A B 0 E00 PIN 9 PIN 0 PIN E7400 PIN PIN PIN E900 PIN 0 PIN PIN Data types: All numeric values, either integer or floating point, are sent as strings of ascii characters. E.g. A value of 00.V is transmitted with characters 00.V, decimal point and V included. Format of command string ( TRANSMISSION to the device): <stx> <nt> <opt> <opt> <data> <checksum> <CR> ASCII characters n BYTES NOTES: checksum is sum of stx+nt+opt+opt+data with bit 7 (MSB) forced to. opt, opt are two numbers that identify the command TYPE. nt is the instrument address with bit 7 forced to. Format of reply in case of errors: <stx> <nt> <data> <checksum> <CR> T0Rx000 0: Fault 9 BYTES NOTES: checksum is the 8 bit sum of stx+nt+data with the bit 7 forced to. fault is the error number 0 value is too high 0 value is too low 03 The value can t be displayed (Over range) 04 Invalid value 05 Value is read only 06 Unknown command 07 invalid floating point number 99 syntax error nt instrument address with bit 7 forced to EXAMPLE: reply to command with wrong opt or opt: TRx

2 COMMAND 00 (Read Software version) <stx> <nt> <optopt> <checksum> <CR> BYTES T0Rx0000 Ver BYTES COMMAND 09 (Read a measured value) <stx> <nt> <optopt><n measure> <checksum> <CR> BYTES Send this string to obtain a measured value in this example Phase voltage, where 09 is <optopt> and is the number of the measurement. (see table ) V The replay is 00V. COMMAND 94 (Write Configuration parameter) <stx> <nt> <optopt><n par.> <val. par.> <checksum> <CR> BYTES Send this string to write the configuration parameters. In this example we set CT primary current (parameter, see table ); The set value is

3 0...3 T0Rx BYTES COMMAND 95 (Read Configuration parameter) <stx> <nt> <optopt><n par.> <checksum> <CR> BYTES Send this string to read the configuration parameters. In this example we read CT primary current (parameter, see table ) CTP (-99999) 5 5 is the CT primary set current (5A) the number can be set in the range 99999A. COMMAND 97 (Save configuration parameters) <stx> <nt> <optopt><numpar> <checksum> <CR> STORE 7BYTES T0Rx BYTES Note: From sw version 3.0 this command has no effect, because parameters are written immediately after a write command ( ). It has been kept only for compatibility with previou sw releases

4 - Table : Configuration parameters CODE LABEL DESCRIPTION RANGE 000 CTP CT primary current value CTS CT secondary current value VTP VT primary voltage value VTS VT secondary voltage value PAG First Page displayed PAG Second Page displayed PAG3 Third Page displayed PAG4 Fourth Page displayed TPAG Page display time AVG Averaging time interval 5 00 PASS Password ChP0 Measure selected for Pulse output (see tab. ) ChP0 Measure selected for Pulse output (see tab. ) TPO Pulse duration ms 005 TPO Pulse duration ms 006 WPO Pulse weight (0000=off) 007 WPO Pulse weight (0000=off) 008 ChPk Peak : measure to be monitored (see tab. ) 0-8,33-36, ChPk Peak : measure to be monitored (see tab. ) 0-8,33-36, ChAl Alarm : measure to be monitored (see tab. ) -8,33-36,40,4 00 ChAl Alarm : measure to be monitored (see tab. ) -8,33-36,40,4 00 TYAl Alarm type (see tab. 5) TYAl Alarm type (see tab. 5) HyAl Alarm Hysteresis 005 HyAl Alarm Hysteresis 006 TdAL Alarm activation delay 0 99 sec 007 TdAL Alarm activation delay 0 99 sec 008 TrAl Alarm auto-reset time sec 009 TrAl Alarm auto-reset time sec 0030 AL Alarm threshold (0=Off) 003 AL Alarm threshold (0=Off) 003 NUMT Station address BAUD Baud rate (see tab. 6) XDEL Min. delay before reply 0 55 ms 0035 InCfg 3-phase connection ( = Aron 3 =3 CT) TPm Average power integration time 99 min 0037 ResEn Reset energy ResPk Reset peak ResPm Reset average power ResH Reset hour meter LDEF Load default SynPm Reset peak average power Out Type of output (0=off, =alarm, =pulse) Out Type of output (0=off, =alarm, =pulse) ChPk3 Peak 3: measure to be monitored (see tab. ) 0-8,33-36, ChPk4 Peak 4: measure to be monitored (see tab. ) 0-8,33-36, CTR CT nominal ratio (Read only) 0049 VTR VT nominal ratio (Read only)

5 - Table : Measures LABEL DESCRIPTION CODE VN Voltage Phase 0 VN Voltage Phase 0 V3N Voltage Phase 3 03 I Current Phase 04 I Current Phase 05 I3 Current Phase 3 06 P Active Power Phase 07 P Active Power Phase 08 P3 Active Power Phase 3 09 Frequency Frequency 0 V Linked Voltage Phase - V3 Linked Voltage Phase -3 V3 Linked Voltage Phase 3- Vtm Average Voltage (V+V3+V3)/3 4 Itm Average Current (I+I+I3)/3 5 P Total active power (P+P+P3) 6 S Apparent Power Phase 7 S Apparent Power Phase 8 S3 Apparent Power Phase 3 9 Stot Total apparent power ( P²+Q²) 0 PF Phase power Factor PF Phase power factor PF3 Phase 3 power factor 3 PF Three-Phase power factor 4 Q Reactive power phase 5 Q Reactive power Phase 6 Q3 Reactive power phase 3 7 Qtot Total reactive power (Q+Q+Q3) 8 Wh(+) Total positive active energy 9 Wh(-) Total negative active energy 30 VARh(+) Total positive reactive energy 3 VARh(-) Total negative reactive energy 3 Pm(+) last/max Average positive active power 33 Pm(-) last/max Average negative active power 34 Qm(+)/last Average positive reactive power 35 Qm(-)/last Average negative reactive power 36 Peak Peak value 37 Peak Peak value 38 Hour Meter Hour meter 39 Temperature Temperature 40 V Phase Sequence Phase sequence ( see table 4) 4 Alarms Alarm status ( see table 3 ) 4 Alarms Alarm status ( see table 3 ) 43 Peak 3 Peak value 3 44 Peak 4 Peak value 4 45 Pm(+) last/max Max positive active power 46 Pm(-) last/max Max negative active power 47 Qm(+) last/max Max positive reactive power 48 Qm(-) last/max Max negative reactive power 49 THD V Total harmonic distortion V (%) 50 THD I Total harmonic distortion I (%) 5 THD V Total harmonic distortion V (%) 5 THD I Total harmonic distortion I (%) 53 THD V3 Total harmonic distortion V3 (%) 54 THD I3 Total harmonic distortion I3 (%)

6 - Table 3 VALUE Alarm state Output state 0 (00) OFF OFF (0) ON OFF (0) OFF ON 3 () ON ON - Table 4 VALUE Voltage Phase Sequence 3 Sequence ok Reverse sequence 0 All Phases off Phase T 0 Phase S 00 Phase R Phase T+S 0 Phase R+T 0 Phase R+S 3 Phases, sequence error - Table 5 VALUE ALARM Min Max 3 Window 4 min 3 phase 5 Max 3 phase 6 Window 3 phase 7 Phase sequence - Table 6 VALUE BAUD RATE

7 Notes: ESAM reserves the right to make modifications in every moment to improve the project and to give the best product. E.S.A.M. unicenter s.r.l. 000 Bareggio (MI) Italia Via S. Pietro, 0 Elettronica Strumenti Apparecchiature Misura Tel (3 l.r.a.) fax

8 E.S.A.M. unicenter s.r.l. 000 Bareggio (MI) Italia Via S. Pietro, 0 Elettronica Strumenti Apparecchiature Misura Tel (3 l.r.a.) fax

Metasys Integrator ESAM E as VND device Application

Metasys Integrator ESAM E as VND device Application Systems Integration Services Europe Application Note Issue Date 0203 APPLICATION NOTE Metasys Integrator ESAM E742002 as VND device Application Introduction 2 Systems Integration Services Europe Contacts