Fema Electronica M40-P, User Manual

Page: 17 / 24

FEMA ELECTRÓNICA . Series M . M40-P
17
Protocol Modbus RTU
Functions implemented 4 (Read_Input_Registers)
Bus type RS-485, up to 57.6 Kbps
Isolation 1000 Vdc
Slots allowed ‘Opt.1’, ‘Opt.2’, ‘Opt.3’ (see section 1.13)
Protocol ASCII
Bus type RS-485, up to 57.6 Kbps
Isolation 1000 Vdc
Slots allowed ‘Opt.1’, ‘Opt.2’, ‘Opt.3’ (see section 1.13)
The RTU module provides a Modbus RTU communications module
for Series M of panel meters. The RTU module implements function
‘4’ (‘Read Input Registers’) of the Modbus RTU protocol, to access the
instrument registers (reading value, alarm status, memory of maxi-
mum and minimum, ...)
Configuration from instrument front keypad, through menu entries
‘Opt.1’, ‘Opt.2’ or ‘Opt.3’, depending on the position the module is
installed (see section 1.13).
The RTU module can be ordered pre-installed into a Series M panel
meter, or standalone for delayed installation, as it does not require
soldering or special configuration.
2.3 Module RTU 2.4 Module S4
The S4 module provides a RS-485 communications module for Series
M of panel meters. ASCII protocol with ‘Master’ / ‘Slave’ architec-
ture. Addressable with up to 31 modules. Frames codified in rep-
resentable ASCII characters (codes 32 to 255), directly visible using
‘hyperterminal’ or similar programs.
• Configurable for direct retransmission to remote meters M60-
485 (14 mm digit height) and BDF Series (60 mm and 100 mm digit
height).
• Access to display values, alarm status, memory of maximum and
minimum, alarm setpoints, ...
Configuration from instrument front keypad, through menu entries
‘Opt.1’, ‘Opt.2’ or ‘Opt.3’, depending on the position the module is
installed (see section 1.13).
The S4 module can be ordered pre-installed into a Series M panel
meter, or standalone for delayed installation, as it does not require
soldering or special configuration.
Terminal B B signal from RS-485 bus
Terminal A A signal from RS-485 bus
Terminal G GND
B A G B A G
B A G
Opt.2 Opt.1
Op
t.3
Power Signal
Terminal B B signal from RS-485 bus
Terminal A A signal from RS-485 bus
Terminal G GND
B A G B A G
B A G
Opt.2 Opt.1
Op
t.3
Power Signal
For more information see document 3498_MODULE-M_RTU_
manual_i.pdf
For more information see document 3499_MODULE-M_S4_
manual_i.pdf