Condair DA 1400, Инструкция по установке, эксплуатации и обслуживанию

Страница: 53 / 58

D Appendix:
Condair DA
2593630_A_EN_2003_DA_IOM
Communication | 53
Communication
D.1 Modbus
The Condair DA Desiccant Dryer supports Modbus RTU with RS 232 interfaces. Support for Modbus RS485 and
TCP/IP can be added with an optional communication card.
Table 8:
RS 232 Pin Interfaces
Pin # RS 232 (Port 1)
1 Not connected Signals are related to the controller’s 0V; the same 0 V is used by the power
supply.
The serial port is not isolated. If the controller is used with a non-isolated
external device,
avoid potential voltage that exceeds ± 10V .
2 0V reference
3 TXD signal
4 RXD signal
5 0V reference
6 Not connected
Table 9:
Analog and Misc. Datapoints
RS232, ID: 35 Bitrate: 9600, Parity: None, Stop bits: 1
MBA MBE Format
Holding
Register
Coil
Status
Read/
Write INFO Text / Info
Var.
Analog inputs
70 R Humidity sensor % RH 0 100 ##
76 R 0-10V dehumidification control VDC 0.0 10.0 ##.#
Analog setpoint
9 R/W
Humidity setpoint for humidity
sensor
% RH 50 - ##
Misc
2 R/W 1=On Unit on/off 1/0 - - -
3 R 1=On Urgent alarm 1/0 - - -
4 R 1=On Non urgent alarm 1/0 - - -
13 R/W 1=On Cooling time react. Air fan 1/0 - - -
15 R/W 1=Auto Unit automatic/manual mode 1/0 - - -
27 R/W 1=On Continuous process air fan 1/0 - - -