Siemens Climatix Series Basis Document page 122

Parameter
Parameter
State
Comm failure
Channel 0 / Channel 1. Displays as of this point the data for the first Modbus channel (channel 0, terminal T1)
and the second Modbus channel (channel 1, terminal T2) of the module.
These are the corresponding parameters, with the exception of enable:
Enable.
Slave
Slave address
Baud rate
Stop bits
Parity
Response timeout
Parameter
Termination
Settings channel 0 / 1
General:
122 / 244
Basis Document Siemens Climatix Control System
Siemens
Page 122
BDCX.100820.01GB
Building Technologies
4 Controller ON:
 The module starts / initialization begins.
 As soon as the two LEDs "BSP" and "BUS" are steady green, com-
munication with the controller and Modbus bus is active.
Caution: HMI must be reset a second time to update; prior to parame-
terization.
5 Configure module.
Main Index > System overview > Communication > Comm module overview >
Module[x] Modbus
Main Index > System overview > Communication > Modbus > Module[x]
Modbus
Range
− OK.
− Alarm
− Passive
− Active
− Passive
− Active
− Active
− Passive
− 2400
− 4800
− 9600
− 19200
− 38400
− One
− Two
− None
− Even
− Odd
0...3600 [sec]
Range
− Passive
− Active
Standard application AHU
Communication
Function
Module state.
Communication error between module and con-
troller.
Modbus channel 1 only: Displays whether Mod-
bus channel 1 (terminal T2 on the module) is
enabled or not.
Caution: This parameter must always be set to
passive.
Displays whether the channel is used.
Current address for the Modbus connection on
the bus.
Displays transmission rate per the Modbus.
Displays number of stop bits:
− One stop bit.
− Two stop bits.
Displays parity.
Settings access time for master.
The master must undertake read access within
this period, otherwise an alarm is triggered (this
function is not yet fully implemented).
Function
A RS485 topology must always be ended using
wave resistors.
− Terminating resistor disabled.
− Terminating resistor enabled.
Go to parameter page for the first / second Mod-
bus channel.
CE1P3977en_02
01.02.2010