Rockwell Automation 20-COMM-H RS485 HVAC Adapter FRN 2.xxx - Manual (Page 86)

B-4 Adapter Parameters
20-COMM-H RS-485 HVAC Adapter User Manual
Publication 20COMM-UM009D-EN-P
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27 [Flt Cfg A1 In]
[Flt Cfg A2 In]
[Flt Cfg B1 In]
[Flt Cfg B2 In]
[Flt Cfg C1 In]
[Flt Cfg C2 In]
[Flt Cfg D1 In]
[Flt Cfg D2 In]
Sets the data that is sent to the Datalink in the drive if
Parameter 15 - [Comm Flt Action] is set to “4” (Send
Flt Cfg) and the adapter times out.
Default: 0
Default: 0
Default: 0
Default: 0
Default: 0
Default: 0
Default: 0
Default: 0
Minimum: 0
Maximum: 4294967295
Type: Read/Write
Reset Required: No
Important: If the drive uses 16-bit
Datalinks, the most significant word of
this value must be set to zero (0) or a
fault will occur.
28 [Clear Counters]
Clears the network diagnostic counters.
Default: 0 = Ready
Values: 0 = Ready
1 = Clear
Type: Read/Write
Reset Required: No
29 [N2 Ref Scale]
Only used if Metasys N2 protocol is selected.
Determines the engineering unit sent over DPI for the
Reference when 100% is set for AO#2.
Default: 32767
Minimum: 0
Maximum: 4294967295
Type: Read/Write
Reset Required: No
30 [Stop Bits Cfg]
Sets the number of stop bits used by the adapter when
the network protocol switch is set to “Modbus RTU.”
When any other protocol is selected, this parameter
setting has no effect.
Default: 0 = 1 bit
Values: 0 = 1 bit
1 = 2 bits
Type: Read/Write
Reset Required: Yes
31 [RTU Ref Adjust]
Sets the percent scale factor for the Reference from
the network when the network protocol switch is set to
“Modbus RTU,” and broadcast messages (Modbus
address “0”) are sent. This lets the drive’s Reference
either match the broadcast message Reference
(=100%), scale below it (<100%), or scale above it
(>100%). When any other protocol is selected, this
parameter setting has no effect.
Default: 100.0%
Minimum: 0.0%
Maximum: 200.0%
Type: Read/Write
Reset Required: No
32 [RTU Param Mode]
Sets the mode in which the adapter operates.
Default: 0 = 16-bit Mode
Values: 0 = 16-bit Mode
1 = 32-bit Mode
Type: Read/Write
Reset Required: Yes
Parameter
No. Name and Description
Details
!
ATTENTION: To guard against equipment damage and/or personal injury, note
that changes to Parameter 31 - [RTU Ref Adjust] take effect immediately. A drive
receiving a broadcast message Reference from the adapter will receive the newly
scaled Reference, resulting in a change of speed.