Shielding; Rs485 Repeaters; Modbus Master Specifications - Honeywell CIPer 50 Installation & Commissioning Instructions

CIPer MODEL 50 CONTROLLER – INSTALLATION AND COMMISSIONING INSTRUCTIONS
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Shielding

Shielding is especially recommended when the Modbus cable is installed in areas with expected or actual
electromagnetic noise. Avoiding such areas is to be preferred.
Use shielded twisted pair cable shielded twisted pair cable 3322 or 3251 and connect the Modbus to a
noise-free earth ground – only once per Modbus connection.

RS485 Repeaters

RS485 repeaters are possible but have not been tested by Honeywell. Hence it is within responsibility of the
installing / commissioning person to ensure proper function.
NOTE
Each Modbus segment will require its own line polarization and line termination.

Modbus Master Specifications

Modbus Compliance
As per the Modbus standard, the CIPer Model 50 controller is a conditionally compliant "regular" Modbus
device.
The CIPer Model 50 controller differs from an unconditionally compliant "regular" Modbus device in that it
does not support communication rates of 1.2, 2.4, and 4.8 kbps (because these communication rates are not
market-relevant).
Physical Layer
2-wire serial line RS485 (EIA-485) (with additional common)
Communication rates:
Max. number of devices:
Cable and wiring specifications: See section "Wiring and Set-Up"
Communication Mode
Typically: Modbus Master.
Transmission Mode
RTU (Remote Terminal Unit) and (via Ethernet) TCP/IP.
Address Range
Modbus slaves can have an address between 1 and 247.
Discrete Inputs, Coils, Input Registers and Holding Registers can have an address between 1 and 65534.
Further Information
For further information, refer to the Modbus Driver documentation (docModbus.pdf).
31-00233-02
9.6, 19.2, 38.4, 57.6, 76.8, and 115.2 kbps supported.
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