esp8266 Modbus example callback procedure get value

I am trying get register value from Modbus slave machine. I use esp8266 and modbus-esp8266 library with Arduino IDE.

My Slave Machine register address:
40001 40002 40003 40004 40005 40006 40007 40008 40009 40010 40011 40012 40013 40014 40015 40016

I need read 03 READ HOLDIG REGISTER . I use this example here: How can i get register value in this procedure

Example address is :Link

Actually how can i see response in loop procedure . I cant reach response from device

If the lower-right corner of you post, you see More / Modify. Use "Modify" to fix you post to make it readable.
Try to copy plain text into your post and put a sketch between code-tags, do not copy HTML code.

Koepel:
If the lower-right corner of you post, you see More / Modify. Use “Modify” to fix you post to make it readable.
Try to copy plain text into your post and put a sketch between code-tags, do not copy HTML code.

Edited.

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