Adeunis RF sigfox MODBUS MASTER ARF8240CA User Manual

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Adeunis RF sigfox MODBUS MASTER ARF8240CA User Manual Manual pdf 53 page image

ENsigfox MODBUS MASTER - Guide utilisateur / User guide version V1.0.153Page of 80FRThere will be as many alarm frames transmitted as VALUE s read on the slave registers exceeding the configured thresholds.The settings associated with this mode of operation are:• Acquisition period (register S320)• Supply time of the external load (slave) before the Modbus request (register 322)• Alarms configuration (registers 340, 345, 350, 355, 360, 365, 370, 375, 380, 385).• High threshold alarms (registers 341, 346, 351, 356, 361, 366, 371, 376, 381, 386).• Hysteresis of high threshold alarms (registers 342, 347, 352, 357, 362, 367, 372, 377, 382, 387).• Low threshold alarms (registers 343, 348, 353, 358, 363, 368, 373, 378, 383, 39).• Hysteresis of low threshold alarms (registers 344, 349, 354, 359, 364, 369, 374, 379, 384, 389).The complete list of registers can be found in paragraph 3.4.E.g.:Register VALUE encoding VALUE ResultS320 Decimal 180 Periodic mode with a period of 180x20s = 3600 seconds = 1hS322 Decimal 200 The supply time of the external load (slave) before the Modbus requestis 200x100 = 20000ms ie 20sS340 Hexadecimal 0x0A106827 Alarm 1 configuration:• Slave address = 0x0A• First register address = 0x1068• Data type : 32-bit unsigned integer (bits 4 and 5 = 2)• Modbus register type: input registers (bit 2 = 1)• Active thresholds: low and high (bits 0 à 1 = 3)S341 Hexadecimal 0x00124F80 High threshold of alarm 1 is 1,200,000 (decimal)S342 Hexadecimal 0x2710 Hysteresis of high threshold of alarm 1 is 10,000 (decimal)S343 Hexadecimal 0x00061A80 Low threshold of alarm 1 is 400,000 (decimal)S344 Hexadecimal 0x2710 Hysteresis of low threshold of alarm 1 is 10,000 (decimal)IMPORTANT : alarms and thresholds are set to a maximum of 4 bytes (ie 2 maximum Modbus registers). For a VALUE defined on a registerone can choose the data type between unsigned or signed 16-bit integer. For a VALUE defined on 2 registers one can choose the type of databetween unsigned or signed 32-bit integer.The settings associated with this mode of operation are:• The setting of the period of transmission of the Keep Alive frame (register 300).The complete list of registers can be found in paragraph 3.4.E.g.:Register VALUEencodingVALUE ResultS300 Decimal 72 The Keep Alive frame is sent every:72x10=720min i.e. 12h (or twice perday)Product in standbySend frame 0X30Periodreached?YesNo2.2.3 Transmission of a daily Keep Alive frameIf the product has no periodic data configured, a Keep Alive frame(0x30) is transmitted regularly according to the following diagram: