FEMA ELECTRÓNICA . Series M . M60-C1
23
Protocol Modbus RTU
Funcons implemented 4 (Read_Input_Registers)
Bus type RS-485, up to 57.6 Kbps
Isolaon 1000 Vdc
Slots allowed ‘Opt.1’, ‘Opt.2’, ‘Opt.3’ (see secon 1.23)
Protocol ASCII
Bus type RS-485, up to 57.6 Kbps
Isolaon 1000 Vdc
Slots allowed ‘Opt.1’, ‘Opt.2’, ‘Opt.3’ (see secon 1.23)
The RTU module provides a Modbus RTU communicaons module
for M Series of panel meters. The RTU module implements funcon
‘4’ (‘Read Input Registers’) of the Modbus RTU protocol, to access the
instrument registers (reading value, alarm status, memory of maxi-
mum and minimum, ...)
Conguraon from instrument front keypad, through menu entries
‘Opt.1’, ‘Opt.2’ or ‘Opt.3’, depending on the posion the module is
installed (see secon 1.23).
The RTU module can be ordered pre-installed into a M Series panel
meter, or standalone for delayed installaon, as it does not require
soldering or special conguraon.
2.3 Module RTU 2.4 Module S4
The S4 module provides a RS-485 communicaons module for M
Series of panel meters. ASCII protocol with ‘Master’ / ‘Slave’ archi-
tecture. Addressable with up to 31 modules. Frames codied in rep-
resentable ASCII characters (codes 32 to 255), directly visible using
‘hyperterminal’ or similar programs.
• Congurable for direct retransmission to remote meter of M Se-
ries (20 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, ...
Conguraon from instrument front keypad, through menu entries
‘Opt.1’, ‘Opt.2’ or ‘Opt.3’, depending on the posion the module is
installed (see secon 1.23).
The S4 module can be ordered pre-installed into a M Series panel
meter, or standalone for delayed installaon, as it does not require
soldering or special conguraon.
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.2Opt.1
Opt.3
PowerSignal
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.2Opt.1
Opt.3
PowerSignal
For more informaon see document 3498_SERIES-M_MODULE-
RTU_i.PDF
For more informaon see document 3499_SERIES-M_MODULE-S4_i.
PDF