Laurel-electronics Modbus Protocol For Series 2 Laureate Digital Pane Manual de usuario

- 1 - Modbus Protocol COMMUNICATIONS MANUAL For Series 2 Laureate Digital Panel Meters, Counters, Timers & DIN-Rail Transmitters Now with Eth

- 10 - 6. MODBUS PROTOCOL IMPLEMENTATION 1. GENERAL The Modbus capability conforms to the Modbus over Serial Line Specification &

- 11 - 4. PARAMETERS SELECTABLE VIA INSTRUMENT SETUP (IS) SOFTWARE Serial Protocol ...Custom ASCII,

- 12 - FC04: Read Input Registers Reads measurement values and alarm status. Returns values in M31 or 2C32 format without decimal point (see Sec 11,

- 13 - FC08: Diagnostics Checks communications between the Master and Slave, and returns the count in the Modbus Slave counters (which are reset whe

- 14 - 8. SUPPORTED EXCEPTION RESPONSE CODES Code Name Error Description 01 Illegal Function Illegal Function Code for this Slave. Only hex Func

- 15 - Column Number FC Action 1 2 3 4 5 6 7 8 9 10 11 12 13 03 03 Request Response : : MA MA FC FC RA NB RA DD* NR DD* NR LRC LRC CR

- 16 - Because the Counter/Timer can provide up to 3 display items during normal operation, it can be used to provide additional features when used

- 17 - B16 Bit Significance M16 Binary Magnitude M15 Sign + Binary Magnitude Hi Byte Lo Byte . Hi Byte Lo Byte .

- 18 - 40 0028 Deviation 4 (Lo word) (not for Scale Meter) as displayed 41 0029 Analog Lo (Hi word) 42 002A Analog Lo (Lo word) 2C32 Dec pt sa

- 19 - 69 0045 Input Type Lo Byte Hex value 40-4D Thermocouple JF, C, KF, KC, NF, NC, EF, EC, TF, TC, SF, SC, RF, RC 50-5C RTD pre-20

- 2 - 1. TABLE OF CONTENTS 1. TABLE OF CONTENTS ...

- 20 - 70 0046 Setup (applicable to Scale Meter) M = Meter F = Function D = Display T = Tare Bits 3:0 Ctrl In 1 Ctrl In 2 Both Reset

- 21 - 74 004A Serial Config 2 Bits 4:0 Meter Serial Address (0-31) [Non-Modbus] Hex 0 = Broadcast (01 = 1 to 0A = 10), 0F = 15, 10 = 1

- 22 - 78 004E Lockout 1 (applicable to DPM) 0 = Enabled, 1 = Locked out Bit 0 Offset, Lo, Hi Rd Bit 1 Scale, Lo In, Hi In Bit 2 Filter

- 23 - READ ONLY (FC03) – Data Type B16 100 0064 Analog Output DAC Type Bits 7:0 0 = none, 1 = 1 output, unipolar (12-bit, pre 2009) 2 = 1 out

- 24 - 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 000A 000B 000C 000D 000E

- 25 - For the following, use any starting Register Addresses and any number of Registers. Register Addr Dec Hex Register Name Data Type Scaling &

- 26 - Bit 6 0 = Relay3 Active On 1 = Off Bit 7 0 = Relay4 Active On 1 = Off 68 0044 Alarm Config 4 Bits 2:0 = # Readings before Alar

- 27 - Hex 5 Valley Peak FRest Hex 6 Function Reset External Gate MReset Hex 7 Meter Hold Peak or Valley

- 28 - 74 004A Serial Config 2 Bits 4:0 Meter Serial Address (0-31) [Non-Modbus] Hex 0 = Broadcast (01 = 1 to 0A = 10), 0F = 15, 10 = 16,

- 29 - 7 = Remote Display, Value 8 = 1st Value in String 9 = 2nd Value in String A = 3rd Value in String B = 4th Value

- 3 - 2. INTRODUCTION, MODBUS PROTOCOL The Modbus Protocol is an industry-standard communications protocol that is selectable with all our serial

- 30 - 81 0051 Alarm Source Bits 1:0 Setpoint 2 Bits 3:2 Setpoint 1 Bits 5:4 Setpoint 4 Bits 7:6 Setpoint 3 For each Setpoint: 00

- 31 - READ ONLY (FC03) – Data Type B16 100 0064 Analog Output DAC Type 0 = none, 1 = 1 output, unipolar (12-bit, pre 2009) 2 = 1 output, unip

- 32 - 7. WARRANTY Laurel Electronics Inc. warrants its products against defects in materials or workmanship for a period of one

- 4 - 3. MODBUS CONNECTION EXAMPLESS

- 5 - 4. JUMPER SETTINGS & FIELD WIRING 1. SAFETY WARNINGS Digital panel meters, counters, timers and transmitters m

- 6 - USB Board & Basic Ethernet Board No jumpers needed. RS232 Board e - Normal operation. f - Slave display to RS232 from another meter.

- 7 - N/CISO GNDRXTXRTSN/CGNDTXRXRTSRS232 INTERFACE Computer654321ISO GNDBRXARXATXBTXISO GNDGNDBTXATXARXBRXGNDRS485 INTERFACE - FULL DUPLEXG

- 8 - E1E4E6E3E2abc ababcdabcd Serial Signal Duplex Jumpers Termination Resistor* Full None E6 a = Transmit E6 c = Receive RS485 Half E6 b + d*

- 9 - 5. PROGRAMMING YOUR MODBUS DEVICE OVERVIEW Modbus digital panel meters, counters, timers and transmitters are easily programmed via their se