Carel plug-in PJ32C User Manual

plug-in
Cod. +030221881 rel. 1.5 - 26/10/10
41
8.2.2 Installation
The mounting of the RS485 serial module uses a standard DIN rail, for wall-mounting an adapter is supplied (DIN rail plate) to
fasten to the wall, onto which module is mounted.
The module-instrument connecting cable is supplied with the module and is 50 cm long; the RS485 module should thus be located
at a distance that is compatible with this connection, which can not be extended.
The electrical connections to be made are the following:
 module instrument connecting cable (50 cm long), connected to the connector on the Top version plug-in instruments;
 230Vac mains power connections to terminals 1 and 2, as in Figure 8.2.1 (indicated by 230Vac on the module);
 RS485 serial connection on terminals 3, 4, 5 as in Figure 8.2.1 (indicated by
, and on the module).
Warning: The serial adapter recommended for the connection is a serial adapter with twisted pair and shield, 0.5A rating, with a
1.5mm² cross-section (e.g. AWG 22-24). The last instrument on the line must be fitted with the 120  terminal resistor.
8.2.3 Setting the operating parameters
The serial module features two operating parameters, for setting the speed of serial transmission and to assign a static address to
the module when the function is enabled. All the parameters can be displayed and modified using the display and the buttons on
the connected plug-in instrument. The parameters can be accessed using parameter t on plug-in instrument. For this operation
parameter H0 on the plug-in instrument must also be set.
8.2.4 Serial adapter parameters
parameters type min max uom def
H0
serial address
(p
lu
g
-in instrument
)
C
0 199 - 1
tS
transmission s
p
eed
(
baud-rate
)
F
0 1 - 0
t0
local address
(
static
)
F
0 127 - 0
Tab. 8.2.4.1
H0: serial address (plug-in instrument parameter)
The setting of this value defines the address of the instrument in the supervisory network, and is required for the operation of the
adapter when other instruments are connected.
The value 0 is reserved (can not be used); in the supervisory network the connected instruments must all have different addresses;
the allowable values range from 1 to 199.
Def.: 1 Available on all models.
tS: transmission speed
Defines the speed (baudrate) of communication between the adapter module and the supervisor PC. With the parameter set to 1 the
speed is 9600 baud, with a value of 0 the speed is 19200 baud. The communication speed must be the same as that defined in the
supervisor program.
Values from 0 to 1 Def.: 0 Available on all models.
t0: local serial address
Defines a local address as an alternative to H0. This parameter allows an independent address to be defined for the connected
instrument. The parameter is visible only if custom-enabled by CAREL (*).
This situation can be useful when the instrument connected to the module is expected to change frequently (e.g. in test situations).
Def.: 0; values can range from 0 to 127, the value 0 is reserved (can not be used).
(*)Enabling of operation with a local address is performed in the CAREL factory and must be requested at the moment of
ordering.

Carel plug-in PJ32C Specifications

General

Brand	Carel
Model	plug-in PJ32C
Category	Thermostat
Language	English