
Technical support:service@icpdas.com P1
GRP-540M Quick Start
v1.3.0, 2018
What’s in the box?
In addition to this guide, the package includes the following items:
ANT-124-05
(GRP-540M-4GX-WF
only)
Related Documents and Software Utilities
Documents
⚫ User Manual: GRP-530M_540M_usermanual_EN.pdf
⚫ Quick Start: GRP-540M_QuickStart.pdf
ftp://ftp.icpdas.com.tw/pub/cd/usbcd/napdos/grp-530_540/manual/
⚫ GRP-540M software Website:
http://m2m.icpdas.com/GRP-540M-series.html

Technical support:service@icpdas.com P2
1
Appearance and Pin Assignments
Ethernet /
USB
COM Port &
Power Input
AntennaSIM Card
SD Card
Rotary
Switch
I/O Expansion
LED: 4G, PWR, L1, L2

Technical support:service@icpdas.com P3
2
LED indicators
A. PWR(Green):Power LED to indicate whether the external power
is input or not. The description is as follows:
The external power is active
The external power is not active
B. RUN(Red):RUN LED indicates if the OS is normal or fail.
C. L1(Green/Red):this Led indicates the status of RTU Client.
D. L2(Green/Red):reserve.
E. 4G (Red):The LED indicates the status of 4G module.
(the 4G module need about 60 seconds to register network
usually)