Data Field Descriptions The following data fields are used. som BW100 start of message, ASCII character = STX (Hex Value = 02). DEVICE Identifies the BW100 to which the message applies. The device is a 2 character number that equals the Unit I.D. code, (P761). ASCII characters = 00 to 15. MT Identifies the 2 character message type transmitted, ASCII characters: Communications 50 = material flow rate 51 = material load 52 = belt speed 53 = totalizer 1, internal 54 = totalizer 2, internal READING Contains the measurement value in the engineering units of measure selected during BW100 programming. The number of bytes in this data field varies dependent upon the reading value.
Up to 8 ASCII characters including the decimal point may be transmitted. UNITS Three ASCII characters identify the totalizer engineering units (MT=53 and MT=54). The first character is always a space. The remaining characters may be: t = tonnes T = tonnes LT = long tonnes kg = Kilograms lb = pounds eom BW100 end of message, ASCII character = CR (Hex Value = 0D). Message Requests Message requests must be transmitted from the host to the BW100 in the following format. som DEVICE MT eom Example:
Data ASCII Example Field Character Description som STX start of message DEVICE 01 for BW100 # 1 MT 50 material flow rate request eom CR end of message Page 48 Milltronics BW100 - INSTRUCTION MANUAL 7ML19985DJ01