5. If the unit is not in program mode, write a 1 to the operating mode word in the output memory (Write Block). Please note that this will only work if the word is already a 0: this only works as a transition. 6. Set the Read / Write flag in the output table (Write Block) to 1 “write”. Application Layer 7. Monitor the Input table of the PLC (read block) and watch for the values you wrote to appear in the appropriate locations. 8. Set Read / Write flag back to 0. 9. Place unit in Run mode. Note: Parameters for Level Products should only be written to while the unit is in PROGRAM mode. If the level instrument is still in RUN mode, the written value might be ignored. Data Map 1:
AiRanger / SITRANS LU series, CraneRanger series, and InterRanger DPS 300 Notes: • The data maps shown for the Write and Read Blocks apply if P762 is set to the default values (see page 14). If any of these values is changed, the data map will be shortened and the configuration will change. (See Appendix A – Reducing the amount of data being transferred over the Bus, on page 48.) • Refer to the PCL documentation on how to program ‘Reads and Writes’ in your PLC. This section describes the meaning of the data read from and written to the Siemens Milltronics SmartLinx instrument.
Write Block 7ML19981BH02 SmartLinx DeviceNet – INSTRUCTION MANUAL Page 21 Word Description Access Data Type 0 measurement point on priority direct bitmapped 1 parameter number MPA integer 2 secondary index (mark) integer 3 decimal place integer 4 format 0/1 5 parameter number integer 6 primary index (point) integer 7 secondary index (mark) integer 8 new value SPA integer 9 decimal place integer 10 format 0/1 11 read/write flag 0/1 12 operating mode direct 0/1