Electronics and I/O Components
I/O Components
13-4
Partisol 2000
i
and Partisol 2000
i
-D Instruction Manual
Thermo Fisher Scientific
The Sampler includes one power fail relay on the motherboard and ten
digital output relays on the digital output board. These are reed relays rated
for at least 500 mA @ 200 VDC.
The power fail relay is Form C (both normally open and normally closed
contacts). All other relays are Form A (normally open contacts) and are
used to provide alarm status and mode information from the Sampler, as
well as remote control to other devices, such as for controlling valves during
calibration. The user may select what information is sent out from each
relay and whether the active state is open or closed.
Sixteen digital inputs are available which may be programmed to signal
instrument modes and special conditions.
The actual use of these inputs will vary based on Sampler configuration.
The digital inputs are TTL level compatible and are pulled up within the
Sampler. The active state can be user defined in the firmware.
Two serial ports allow daisy chaining so that multiple Samplers may be
linked using one PC serial port.
The standard bi-directional serial interface can be configured for either RS-
232 or RS-485. The serial baud rate is user selectable in the firmware for
standard speeds from 1200 to 115200 baud. The user can also set the data
bits, parity, and stop bits. The following protocols are supported:
●
C-Link
●
Streaming Data
●
MODBUS Slave
●
AK
The Streaming Data protocol transmits user-selected measurement data via
the serial port in real-time for capture by a serial printer, data logger, or PC.
A null modem (crossed) cable is required when connecting the Sampler to
an IBM-compatible PC. However, a straight cable (one to one) may be
required when connecting the Sampler to other remote devices. As a
general rule, when the connector of the host remote device is female, a
straight cable is required and when the connector is male, a null modem
cable is required.
Digital Relay
Outputs
Digital Inputs
Serial Ports
RS-232 Connection
