ABB ACH550-UH User Manual page 521

ACH550 E-Clipse Bypass User's Manual
Mapping summary
The following table summarizes the mapping between the system (parameters and I/
0) and Modbus reference space. For details, see
• Control Bits
• Relay Outputs
• Status Bits
• Discrete Inputs
• Analog Inputs
• Parameters
• Control/Status Words
• References
Communication profiles
When communicating by Modbus, the drive supports multiple profiles for control and
status information. Bypass parameter 5305 (
used. If bypass parameter 1625 = (1) SYSTEM then the drive and bypass profile are
fixed ABB BYPASS PROFILE. See section Bypass Overview for ABB BYPASS
PROFILE
•
ABB DRV LIM
standardizes the control interface with ACH400 and ACH550 drive. This profile is
based on the PROFIBUS interface, and is discussed in detail in the following
sections.
•
DCU PROFILE
status interface to 32 bits.
•
ABB DRV FULL
ACS800 drive. This profile is also based on the PROFIBUS interface, and
supports two control word bits not supported by the
Modbus addressing
With Modbus, each function code implies access to a specific Modbus reference set.
Thus, the leading digit is not included in the address field of a Modbus message.
Note: The drive supports the zero-based addressing of the Modbus specification.
Holding register 40002 is addressed as 0001 in a Modbus message. Similarly, coil
33 is addressed as 0032 in a Modbus message.
Refer again to the
detail, the mapping to each Modbus reference set.
0xxxx Mapping – Modbus Coils. The bypass maps the following information to the
0xxxx Modbus set called Modbus Coils:
ACH550 Modbus Reference
Coils(0xxxx)
Discrete Inputs(1xxxx)
Input Registers(3xxxxx)
Holding Registers(4xxxx)
– The primary (and default) profile is the
– Another profile is called the
– This profile standardizes the control interface with ACS600 and
Mapping summary
Modbus addressing
Supported Function Codes
• 01 – Read Coil Status
• 05 – Force Single Coil
• 15 – Force Multiple Coils
• 02 – Read Input Status
• 04 – Read Input Registers
• 03 – Read 4X Registers
• 06 – Preset Single 4X Register
• 16 – Preset Multiple 4X Registers
• 23 – Read/Write 4X Registers
EFB CTRL PROFILE
ABB DRV LIM
. It extends the control and
DCU PROFILE
ABB DRV LIM
above. The following sections describe, in
2-175
below.
) selects the profile
profile, which
profile.
Embedded fieldbus