The A/D converter can transmit up to 3840sps.
A maximum rate of 50 measurements per second can be set in the PC Xtrem software (see figure), either via the RS232 interface or the Ethernet option (but not via the WiFi option).
The Xtrem module can acquire load cell signals at two rates, which are configurable with PC-XTREM:
12sps (samples per second) option. One measurement every 80ms (12 per second). This is the factory setting best suited for a static scale.
Option 50sps. One measurement every 20ms (50 per second). The analogue-to-digital converter (A/D converter) that the Xtrem module is equipped with supports much higher sampling rates*****.
(*****6.25, 7.5, 12.5, 15, 25, 30, 50, 60, 100, 120, 200, 240, 400, 480, 800, 960, 1600, 1920, 3200 & 3840sps MCLK=4.9152 MHz)
The command for the Xtrem module to send the weight information continuously (at a specific frequency) is as follows:
| PC sends to Xtrem 01 | Xtrem scale 01 response | |
| “\u00020001E10110000\u0003” | à | |
| ß | “\u00020100r01071AW 0.0kgT 0.0kgS01561\u0003\r\n” | |
| (50ms) | ||
| ß | “\u00020100r01071AW 0.0kgT 0.0kgS01561\u0003\r\n” | |
| (50ms) | ||
| ß | “\u00020100r01071AW 0.0kgT 0.0kgS01561\u0003\r\n” |
The command to end sending in continuous mode is:
| PC sends to Xtrem 01 | Xtrem scale 01 response | |
| “\u00020001E10100000\u0003” | à |
The transmission frequency is programmed with the W0013 command (see point “9.4 0013h Output rate in stream mode” in the communication protocol document). Example of programming the transmission of the weight every 2 seconds:
| PC sends to Xtrem 01 | Xtrem scale 01 response | |
| “\u00020001W001304200000\u0003” | à |
*****The RS485 interface is half-duplex: Only one device can use the interface at the same time. Communication should always take place on request from the “master” device.
If you configure the Xtrem module to send data continuously and several devices are connected to the same RS485 bus, it is very likely that communication errors will occur.
Documents
⤓ Communication Protocol
