LJS-1000 flowrate computer (hereinafter referred to as “the instrument”) adopts 32-digit ARM processor as the main controller with 800480 capacitive touch color screen. The device is expanded with 512M ROM space, and is capable of recording the acqu…
CPU: RAM core processor;
Storage space (ROM) 512M;
Memory (RAM) 512M;
SD card expansion supports max 64G(SD card is required when the instrument is working after power on);
100M self-adaptive Ethernet port (executing Modbus TCP/IP protocol or TCP/IP protocol);
2-channel USB2.0 interface, connect with HUB for expansion;
1-channel RS232 interface, it can be connected with standard embedded thermal printer;
1-channel RS485 interface, executing Modbus protocol (customized according to user’s requirements);
The standard configuration includes 7” color capacitive touch screen, resolution is 800×480;
Configuration of slave processor system
CPU: 32-digit Cortex-M3, running frequency is 16MHz;
Program memorizer is 128K FLSH/EE;
Data memorizer: 8K SRAM;
Analog value input: 6-channel, AD conversion resolution is 24-digit (Σ-Δ), lowest sampling rate is 5 times/s;
Pulse input: 2-channel (multiplexing with channel 5, channel 6);
Switching value output: 2-channel;
HART input: 1-channel (multiplexing with channel 1, measuring instrument without this function).