6.13
Modbus communications: Cannot
communicate using Modbus
®
RTU
Recommended actions
1. Verify the use of RS-485.
2. Verify wiring connections.
3. Verify if termination or a pull up is required.
a) Verify that Modbus serial communications settings in the Gateway
match the Modbus Host settings.
b) Log on to the Gateway and navigate to
SETUP
→
MODBUS
→
COMMUNICATIONS
.
4. Verify the Modbus address for the Gateway.
5. Verify Modbus register mapping in the Gateway.
a) Log on to the Gateway and navigate to
SETUP
→
MODBUS
→
MAPPING
.
6.14
Modbus communications: Cannot
communicate using Modbus
®
TCP
Possible cause: Incorrect settings
Recommended actions
1. Verify secure/unsecure Modbus protocol settings in the Gateway.
a) Log on to the Gateway.
b) Navigate to
SETUP
→
SECURITY
→
PROTOCOLS
.
2. Verify the Modbus TCP communications settings in the Gateway.
a) Log on to the Gateway.
b) Navigate to
SETUP
→
MODBUS
→
COMMUNICATIONS
.
3. Verify Modbus register mapping in the Gateway.
a) Log on to the Gateway.
b) Navigate to
SETUP
→
MODBUS
→
MAPPING
.
6.15
Modbus communications: Cannot
communicate using secure Modbus
®
TCP
Reference Manual
Troubleshooting
00809-0600-4410
May 2020
Emerson 1410S/781S
49
Summary of Contents for 781S
Page 2: ...2 ...
Page 6: ...Introduction Reference Manual May 2020 00809 0600 4410 6 Emerson com ...
Page 20: ...Configuration Reference Manual May 2020 00809 0600 4410 20 Emerson com ...
Page 34: ...Installing the Gateway Reference Manual May 2020 00809 0600 4410 34 Emerson com ...
Page 44: ...Operation and maintenance Reference Manual May 2020 00809 0600 4410 44 Emerson com ...
Page 67: ...Reference data Reference Manual May 2020 00809 0600 4410 54 Emerson com ...
Page 68: ...Quick Start Guide 00825 0600 4410 Rev AA March 2020 Emerson Wireless 1410S Gateway ...
Page 93: ...7 5 Declaration of Conformity Quick Start Guide March 2020 26 Emerson com ...
Page 94: ...March 2020 Quick Start Guide Quick Start Guide 27 ...
Page 95: ...Quick Start Guide March 2020 28 Emerson com ...
Page 98: ...Quick Start Guide 00825 0700 4410 Rev AA March 2020 Emerson Wireless 781S Smart Antenna ...
Page 112: ...Quick Start Guide March 2020 16 Emerson com ...
Page 113: ...March 2020 Quick Start Guide Quick Start Guide 17 ...
Page 115: ...March 2020 Quick Start Guide Quick Start Guide 19 ...
Page 116: ...Quick Start Guide March 2020 20 Emerson com ...
Page 118: ...Quick Start Guide March 2020 22 Emerson com ...
Page 119: ...March 2020 Quick Start Guide Quick Start Guide 23 ...
Page 130: ...Redundant Gateway systems Reference Manual May 2020 00809 0600 4410 64 Emerson com ...