Manual

8
All Rights Reserved. Copyright © 2012-2013, Yokogawa Electric Corporation
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GS 04L51B01-01EN May. 7, 2013-00
 SPECIFICATIONS OF OPTIONAL
FUNCTIONS
SERIAL COMMUNICATION INTERFACE (/C2, /C3)
• Connection: EIA RS-232(/C2) or EIA RS-
422/485(/C3)
• Protocol: Dedicated protocol or Modbus protocol
• Setting/measurement server function: Operation,
setting or output of measurement data are
available by dedicated protocol.
• Synchronization: Start-stop synchronization
• Transmission mode (RS-422/485):
RS-422: Four-wire half-duplex multi-drop
connection (1:n (n = 1 to 31))
RS485: Two-wire half-duplex multi-drop
connection (1:n (n = 1 to 31))
• Baud rate: 1200, 2400, 4800, 9600, 19200,
38400, 57600, or 115200 bps
• Data length 7 or 8 bits
• Start bit: 1 bit
• Stop bit: 1 bit or 2 bit
• Parity: ODD, EVEN, or NONE
• Handshaking Off: Off, XON: XON, XON: RS, and
CS: RS
• Communication distance; RS-422/485: 1200 m,
RS-232: 15 m
• Modbus/RTU communication: Reading or writing
of measurement data on other instruments is
available by Modbus protocol.
Math channel option is needed to read
measurement data from other instruments.
• Operation modes: Master or slave
VGA VIDEO OUTPUT (/D5) (Only for GX20)
• External display:
Resolution: 800 × 600 dots (VGA)
Connector: 15-pin D-Sub
FAIL OUTPUT (/FL)
• Contact: C contact, 1 point
• FAIL output:
The relay contact output on the rear panel
indicates the occurrence of CPU failure.
Relay operation: Energized during normal
operation and de-energized on CPU failure.
• Rated power supply voltage: 24 V DC or 250 V
AC or less
• Rated load current: 3A (DC)/3A (AC), resistance
load
• Min. load current: 100 mA
• Recommended replacement periods of contact:
Electrical: 30,000 more ON-OFF operations,
Mechanical: 5,000,000 more ON-OFF operations
MATHEMATICAL FUNCTIONS WITH REPORT
FUNCTION (/MT)
Mathematical Function:
• Number of math channels; GX10: 50, GX20: 100
• Operation:
General arithmetic operations: Four arithmetic
operations (+, -, *, /), square root, absolute,
common logarithm, natural logarithm,
exponential, and power
Relational operations: <, ≤, >, ≥, =, and ≠
Logic operations: AND, OR, NOT, and XOR
Statistical operations: TLOG or CLOG
Special operations: PRE, HOLD, RESET, and
CARRY
Conditional operation: [a?b:c]
• Computation accuracy: Double-precision oating
point
• Data that can be used;
Channel data: Measurement channels
(GX10: 0001 to 0216, GX20: 0001 to 0916),
mathematical channels (GX10: A001 to A050,
GX20: A001 to A100), Communication channels
(GX10: C001 to C050, GX20: C001 to C300),
Constants:100 (K001 to K100), Internal switch:
100 (S001 to S100), Flag: 20 (F01 to F20)
Report function:
• Number of report channels; GX10: 50, GX20: 60
• Report types: Hourly + daily, daily + weekly, daily
+ monthly, Batch, Day custom
• Computation types: Average, maximum,
minimum, sum, or instantaneous value
• Unit of sum: OFF, /s, /min, /hour, /day
• Report templates: Ofce Open XML spreadsheet
les (which can be displayed with Microsoft
Ofce Excel) or PDF les can be output or
printed out with any LAN-connected printer
supporting the HP-PCL5 language.
COMMUNICATION CHANNEL FUNCTIONS (/MC)
• Number of communication channels; GX10: 50
(C001 to C050), GX20: 300 (C001 to C300)
* Required to record data from Modbus devices or
PCs on the GX/GP.