Connecting HMP155 - HMP155 - WID513

WID513 User Guide
Document code
M211676EN
Revision
G
Language
English
Product
WID513
Document type
User guide

Create a 2‑wire RS‑485 connection from the display to HMP155.

Figure 1. HMP155 cable wiring
2
RS‑485‑B
6
RS‑485‑A
  1. Connect the display COM1 or COM2 R− to HMP155 RS‑485‑B.
  2. Connect the display COM1 or COM2 R+ to HMP155 RS‑485‑A.
  3. Make sure that the DIP switches in the display are set to RS‑485 (2‑wire) mode.
  4. Configure the COM port settings according to the wiring.
If HMP155 does not answer to the poll command, try changing the timeout delay or add a resistor to the sensor end.