ABB ACS550-02 User Manual page 155

Note: The ACS550 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.
ACS550 parameters and I/O "map" to the Modbus reference space as defined in the
following table.
ACS550
• Control bits
• Relay outputs
• Status bits
• Discrete inputs
• Analog inputs
•
CONTROL WORD
•
STATUS WORD
• References
• Parameters
The following sections describe, in detail, the mapping to each Modbus reference
set.
0xxxx Mapping – Modbus Coils
The drive maps the following information to the 0xxxx Modbus set called Modbus
Coils:
• Bit-wise map of the
). The first 32 coils are reserved for this purpose.
PROFILE
• Relay output states, numbered sequentially beginning with coil 00033.
The following table summarizes the 0xxxx reference set:
Modbus
Internal Location
Ref.
(All Profiles)
00001
CONTROL WORD
00002
CONTROL WORD
00003
CONTROL WORD
00004
CONTROL WORD
00005
CONTROL WORD
00006
CONTROL WORD
00007
CONTROL WORD
00008
CONTROL WORD
00009
CONTROL WORD
00010
CONTROL WORD
00011
CONTROL WORD
Modbus Reference Set
Coils (0xxxx)
Discrete inputs (1xxxx)
Input registers (3xxxx)
Holding registers (4xxxx)
(selected using parameter 5305
CONTROL WORD
Standard Profile (
5305
EFB CTRL PROFILE
- Bit 0 OFF1*
- Bit 1 OFF2*
- Bit 2 OFF3*
- Bit 3 START
- Bit 4 N/A
- Bit 5 RAMP_HOLD*
- Bit 6 RAMP_IN_ZERO*
- Bit 7 RESET
- Bit 8 N/A
- Bit 9 N/A
- Bit 10 N/A
Supported Function Codes
• 01 – Read coil status
• 05 – Force single coil
• 15 – Force multiple coils (0x0F Hex)
• 02 – Read input status
• 04 – Read input registers
• 03 – Read 4xxxx registers
• 06 – Preset single 4xxxx register
• 16 – Preset multiple 4xxxx registers (0x10 Hex)
• 23 – Read/write 4xxxx registers (0x17 Hex)
ACS550
) Alternate Profile (
ABB DRIVES
= 0 5305
STOP
START
REVERSE
LOCAL
RESET
EXT2
RUN_DISABLE
STPMODE_R
STPMODE_EM
STPMODE_C
RAMP_2
153
EFB CTRL
550)
ACS
= 1
EFB CTRL PROFILE
Start-Up