Honeywell PRO22IC Installation Manual - Page 11

Power, Communications

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PRO-2200 Intelligent Controller PRO22IC Installation Guide 11 Power The controller accepts 12 VDC with an operating range of 10 to 16 VDC and consumes 400mA of current. Locate power source as close to this board as possible. Connect power with minimum of 18AWG wires. The addition of the PRO22EN consumes an extra 150 mA of current. The addition of the PRO22M4 consumes less than 1 mA of extra current. NOTE: POLARITY for 12 VDC power is important. Make sure the +12 VDC is connected to the terminal labeled +12V and the return is connected to the terminal labeled GND. Communications The controller communicates to the host through port 1. Port 1 may use one of three communications specifications: RS-232-When this port is selected as an RS-232 interface, the communication is a direct point to point connection to a host computer port (only one PRO22IC per computer port), via direct connection or modem and this device acts as Data Terminal Equipment (DTE). RS-485-When this port is selected as an RS-485 interface, up to eight controller boards can share one host computer port. Ethernet-When the Ethernet option board is present, the port is set to the RS-232 setting and DIP switch 5 must be set to ON (handshaking enabled, along with JP14 removed). The default selection for port 1 is RS-485. The default speed of this port is 38.4Kbps but it can be downgraded to 19.2Kbps or 9.6Kbps if the line conditions or receiving equipment require it (see jumper and DIP switch settings). Ports 2 & 3 are RS-485 interfaces. These interfaces allow multi-drop communication up to 4,000 feet (1,250 m total per port). Use two twisted pairs (120Ω, 23pF minimum 24 AWG) with shield for the communication. Install termination jumper only for end of line unit. The default speed of each port is 38.4Kbps but can be downgraded to 19.2Kbps or 9.6Kbps if the line conditions or receiving equipment require it (see jumper and DIP switch settings). Up to eight boards can be connected in any combination to ports 2 and 3. For Wiring to an RS-232 port: 1. TXD indicatesTransmit and is the conductor of data from PRO22IC to another device. 2. RXD indicates Receive and is the conductor of data from another device to the PRO22IC. 3. RTS indicates Request To Send and conducts the signal that the PRO22IC has data to send. 4. CTS indicates Clear To Send and conducts the signal that another device is ready for data. 5. GND is the signal ground. The wiring for this signal is required and NOT optional. This signal must NOT be tied to Chassis Ground. 6. Use 24 AWG shielded cable up to 25 feet.

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PRO-2200 Intelligent Controller PRO22IC
11
Installation Guide
Power
The controller accepts 12 VDC with an operating range of 10 to 16 VDC and consumes
400mA of current.
Locate power source as close to this board as possible. Connect power with minimum of
18AWG wires.
The addition of the PRO22EN consumes an extra 150 mA of current.
The addition of the PRO22M4 consumes less than 1 mA of extra current.
NOTE:
POLARITY for 12 VDC power is important. Make sure the +12 VDC is connected
to the terminal labeled +12V and the return is connected to the terminal labeled
GND.
Communications
The controller communicates to the host through port 1.
Port 1 may use one of three communications specifications:
RS-232
—When this port is selected as an RS-232 interface, the communication is a
direct point to point connection to a host computer port (only one PRO22IC per computer
port), via direct connection or modem and this device acts as Data Terminal Equipment
(DTE).
RS-485
—When this port is selected as an RS-485 interface, up to eight controller boards
can share one host computer port.
Ethernet
—When the Ethernet option board is present, the port is set to the RS-232
setting and DIP switch 5 must be set to ON (handshaking enabled, along with JP14
removed).
The default selection for port 1 is RS-485.
The default speed of this port is 38.4Kbps but
it can be downgraded to 19.2Kbps or 9.6Kbps if the line conditions or receiving equipment
require it (see jumper and DIP switch settings).
Ports 2 & 3 are RS-485 interfaces. These interfaces allow multi-drop communication up to
4,000 feet (1,250 m total per port). Use two twisted pairs (120
Ω
, 23pF minimum 24 AWG)
with shield for the communication. Install termination jumper only for end of line unit.
The
default speed of each port is 38.4Kbps but can be downgraded to 19.2Kbps or 9.6Kbps if
the line conditions or receiving equipment require it (see jumper and DIP switch settings).
Up to eight boards can be connected in any combination to ports 2 and 3.
For Wiring to an RS-232 port:
1.
TXD indicates Transmit and is the conductor of data from PRO22IC to another device.
2.
RXD indicates Receive and is the conductor of data from another device
to the PRO22IC.
3.
RTS indicates Request To Send and conducts the signal that the PRO22IC has
data to send.
4.
CTS indicates Clear To Send and conducts the signal that another device
is ready for data.
5.
GND is the signal ground.
The wiring for this signal is required and
NOT
optional.
This signal must
NOT
be tied to Chassis Ground.
6.
Use 24 AWG shielded cable up to 25 feet.