Does the Micrologix 1500 can communicate with the device with MODBUS RTU? The device is a temperature transmitter. The processor is Ser. C Rev. D
The channe l is connected to a 1761-NET-AIC with DSUB-DSUB null modem cable
In RSLogix 500
Channel Configuration / Channel 1 / MODBUS RTU Master
RSlinks
Driver type -1747-PIC/AIC
Driver / AB_PIC-1
Configure Device COM1-9600-Station Number 02
Parameter connection on the device
Rs 485 9600 8N2, MODBUS - RTU
The transmitter is factory at address 02,
Location code Rb
1 Pb 00 [FONT=TimesNewRomanPSMT, serif]Sensor error amendment[/FONT]
2 Filt 02 [FONT=TimesNewRomanPSMT, serif]Filt modulus[/FONT]
3 OUTH 04 [FONT=TimesNewRomanPSMT, serif]Allow exports [/FONT][FONT=TimesNewRomanPSMT, serif]max value[/FONT]
4 OUTL 06 [FONT=TimesNewRomanPSMT, serif]Allow exports [/FONT][FONT=TimesNewRomanPSMT, serif]min value[/FONT]
5 Lock 08 [FONT=TimesNewRomanPSMT, serif]Code lock[/FONT]
6 Sn 0A Input type
7 P-SH 0C [FONT=TimesNewRomanPSMT, serif]Display the high [/FONT][FONT=TimesNewRomanPSMT, serif]limit[/FONT]
8 P-LH 0E [FONT=TimesNewRomanPSMT, serif]Display the low limit[/FONT]
9 Addr 10 [FONT=TimesNewRomanPSMT, serif]Communication [/FONT][FONT=TimesNewRomanPSMT, serif]addres[/FONT]
10 Baud 12 [FONT=TimesNewRomanPSMT, serif]Communication [/FONT][FONT=TimesNewRomanPSMT, serif]baud rate[/FONT]
Reading parameters
Address register locations
[FONT=TimesNewRomanPSMT, serif]XX 03 00 XX 00 01 CRC[/FONT]
Example 1
Read probe type transmitter with address 0
[FONT=TimesNewRomanPSMT, serif]00 03 00 0A 00 01 A5 D9[/FONT]
Reply to transmitters with type J probe
[FONT=TimesNewRomanPSMT, serif]00 03 02 00 05 45 87[/FONT]
Example 2
Read the current measured value for the address of the transmitter 2
[FONT=TimesNewRomanPSMT, serif]02 03 00 C8 00 01 05 C7[/FONT]
Reply to transmitter that measures the temperature of 33.6 C (01 50)
[FONT=TimesNewRomanPSMT, serif]02 03 02 01 50 FD E8[/FONT]
The channe l is connected to a 1761-NET-AIC with DSUB-DSUB null modem cable
In RSLogix 500
Channel Configuration / Channel 1 / MODBUS RTU Master
RSlinks
Driver type -1747-PIC/AIC
Driver / AB_PIC-1
Configure Device COM1-9600-Station Number 02
Parameter connection on the device
Rs 485 9600 8N2, MODBUS - RTU
The transmitter is factory at address 02,
Location code Rb
1 Pb 00 [FONT=TimesNewRomanPSMT, serif]Sensor error amendment[/FONT]
2 Filt 02 [FONT=TimesNewRomanPSMT, serif]Filt modulus[/FONT]
3 OUTH 04 [FONT=TimesNewRomanPSMT, serif]Allow exports [/FONT][FONT=TimesNewRomanPSMT, serif]max value[/FONT]
4 OUTL 06 [FONT=TimesNewRomanPSMT, serif]Allow exports [/FONT][FONT=TimesNewRomanPSMT, serif]min value[/FONT]
5 Lock 08 [FONT=TimesNewRomanPSMT, serif]Code lock[/FONT]
6 Sn 0A Input type
7 P-SH 0C [FONT=TimesNewRomanPSMT, serif]Display the high [/FONT][FONT=TimesNewRomanPSMT, serif]limit[/FONT]
8 P-LH 0E [FONT=TimesNewRomanPSMT, serif]Display the low limit[/FONT]
9 Addr 10 [FONT=TimesNewRomanPSMT, serif]Communication [/FONT][FONT=TimesNewRomanPSMT, serif]addres[/FONT]
10 Baud 12 [FONT=TimesNewRomanPSMT, serif]Communication [/FONT][FONT=TimesNewRomanPSMT, serif]baud rate[/FONT]
Reading parameters
Address register locations
[FONT=TimesNewRomanPSMT, serif]XX 03 00 XX 00 01 CRC[/FONT]
Example 1
Read probe type transmitter with address 0
[FONT=TimesNewRomanPSMT, serif]00 03 00 0A 00 01 A5 D9[/FONT]
Reply to transmitters with type J probe
[FONT=TimesNewRomanPSMT, serif]00 03 02 00 05 45 87[/FONT]
Example 2
Read the current measured value for the address of the transmitter 2
[FONT=TimesNewRomanPSMT, serif]02 03 00 C8 00 01 05 C7[/FONT]
Reply to transmitter that measures the temperature of 33.6 C (01 50)
[FONT=TimesNewRomanPSMT, serif]02 03 02 01 50 FD E8[/FONT]