Entec LBS-751, Быстрый старт

Страница: 10 / 12

Quick Start Guide APPENDIX 2
LBS-751 Control
10
www.Entec-USA.com
Analog Points
Special Analog Values
Source Location
03h Read
Tag Scaler User Table Address Data Type
Operations
MV01 0.01 MOD_001
126 32 Bit Signed
Phase PU (Amps) MV02 0.01 MOD_003
128 32 Bit Signed
Ground PU (Amps) MV03 0.01 MOD_005 130 32 Bit Signed
Trip Counter
SC03 1 MOD_065
190 16 Bit
Control Points
Control Bits
Source Location 05h Force Single Coil
Tag Coil Address Data Type
PB01 – Lock Push Buttons RB01 27 Remote Bit Coil
PB02 – Loop Mode Enable
RB02 28
Remote Bit Coil
PB03 – CLOSE Switch RB03 29
Remote Bit Coil
PB04 – TRIP Switch RB04 30 Remote Bit Coil
Target Reset RB05 31 Remote Bit Coil
Trip Count Reset RB06 32 Remote Bit Coil
Reset Max / Min RB07 33 Remote Bit Coil
Polarity: Logic 1 = Active Condition (Set Coil)
Modbus Protocol Codes
02h Read Input Status (Coils) Command
Use function code 02h to read bits as individual coil values. The coil method increases data
size and may require multiple polls to completely read one device, but single binary values
placed in one coil greatly simplifies binary state determinations at the Scada master. Use
the 02h coil address provided in the status bit table above to collect data.
Bytes Field
02h Read request format from Master
1 byte Slave Address
1 byte Function Code (02h)
2 bytes Coil Address
2 bytes Number of coils to read ( n )
2 bytes CRC‐16
02h Successful response format from Slave
1 byte Slave Address
1 byte Function Code (02h)
1 byte Coils of data ( n )
n bytes Data
2 bytes CRC‐16