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Notes:
Notes:
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Siemens
Building Technologies
• The SEZ50MB only support Modbus commands for either READ or WRITE of one
parameter each time. If access to consecutive parameters is required, users should
issue multiple commands manually or via any Modbus SW tool;
• Each command string may vary depending on function code used, some function
codes may take longer time to be processed by SEZ50MB. The longest process time
of SEZ50MB would be around 6 seconds;
• Some values may be rounded by SEZ50MB before passing to RWD in order to fulfill
the current STEP SIZE and RESOLUTION. For example, if a setpoint is entered as
16.7, it will be presented as 16.7 or rounded to 16.5 – depends on its resolution
settings;
• The parameter with
#
is not recommended to be used during the normal operation of
RWD, but can be used during maintenance.
E.g. Write specific value to parameter address "40179" with function code "0x10" and
it will cause reset.
Therefore, special attention is required:
Write 12 (0x0C) to device address "40179" to reset RWD32/62/68/82
Write 167 (0xA7) to device address "40179" to reset RWD34/44/45
5
RWD Parameters & Addresses
The following parameter table contains all available RWD parameters including all input
and output signal status. These parameters are mainly for monitoring functions via
Modbus network and some of them can be modified during operation.
Besides function codes (READ or WRITE) provided in section 4, you also can refer to
the following parameter table for the interpretation of the correct responds or returned
values. For more details about RWD parameters, please check individual RWD
datasheet.
• Please refer to SEZ50MB Parameter Tool for valid parameters of different RWD
models;
• Avoid frequent daily WRITE actions to RWD via Modbus because there are limited
write cycles allowed for the memory and storage devices where all RWD SW
parameters stored;
• The * next to the parameter addresses indicate that this parameter can execute both
READ and WRITE function codes;
• The
#
means this parameter should not be used for normal operation;
• If error occurs during the operation or error message received, please refer to the
section "Trouble Shooting" for more information.
RWD Primary Controls Modbus Interface
RWD Parameters & Addresses
CB1P3099en_01
27.10.2009
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