Relay Function Codes (P111 in Level Products Only) If a Siemens Milltronics instrument parameter returns a relay function code, that message is converted to a number and provided in the register. The numbers are shown in the table below (see the Siemens Milltronics SmartLinx instrument manual for full information on P111):
Application Layer 7ML19981BH02 SmartLinx DeviceNet – INSTRUCTION MANUAL Page 45 Relay Function Code Number P111 off, relay not used 0 0 undesignated level alarm 1 1 low-low level alarm 2 1 – LL low level alarm 3 1 – L high level alarm 4 1 – H high-high level alarm 5 1 – HH in bounds alarm 6 2 in bounds alarm 7 2 – B1 in bounds alarm 8 2 – B2 out of bounds alarm 9 3 out of bounds alarm 10 3 – B1 out of bounds alarm 11 3 – B2 rate of level change alarm 12 4 rate of level change alarm 13 4 – R1 rate of level change alarm 14 4 – R2 temperature alarm 15 5 loss of echo (LOE) alarm 20 6 transducer cable fault alarm 16 7 pump efficiency alarm 17 8 clock failure alarm 18 9 time of day alarm 19 10 pump failure alarm 21 11 totalizer 22 40 flow sampler 23 41 fixed duty assist 25 50 fixed duty backup 26 51 alternate duty assist 30 52 alternate duty backup 31 53 service ratio duty assist 35 54 service ratio duty backup 36 55 first in first out (FIFO) 40 56 time 45 60 overflow 50 61