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GTC-520A
Instruction Manual
6.5.6. 485 Setting Mode
■ When "FUNC" S/W is pushed after moving by "UP" S/W or "DOWN" S/W following setting for Password, it can be
entered into.
■ When 10 sec passes after the last SW operation in 485 Mode function, the display state of gas concentration is
returned to
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Mode for setting of 485 function.
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When "FUNC" S/W is pushed, the setting function for 485 is entered into.
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When "RESET" S/W is pushed, the display state of gas concentration is returned to.
- Setting function for Channel Number as a function to set for recognition No. of Control Unit.
- When "FUNC" S/W is pushed, the setting function for Channel Number is entered into.
- When "RESET" S/W is pushed, 485 Mode is returned to.
- Channel Number is the mode to input unique No. of Control Unit so as to allow checking for
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operation situation of each Control Unit in other equipment such as PC, etc. and Address No.
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value is increased or decreased whenever "UP" S/W or "DOWN" S/W is pushed. (Basic value 1)
- If "FUNC" S/W is pushed when the desired Address No. value s displayed, the selection is set
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and the next item is entered into.
- Channel No. is set as"1" upon factory shipment, and may be inputted only when use of
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communication function is desired. When more than 2 units of Control Unit are used, mutually
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different Nos. must be inputted to avoid mutual overlapping of the Channel No.
- Mode for setting of Parity Bit as the format for 485 communication.
- When "FUNC" S/W is pushed, the setting function for Parity Bit is entered into.
- When "RESET" S/W is pushed, 485 Mode is returned to.
- Parity Bit is the bit added to the original information to inspect whether errors occurred in the
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process of information transmission, and the Parity Bit value is increased or decreased
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whenever "UP" S/W or "DOWN" S/W is pushed. (Basic value 1)
- 0 : NONE, 1: EVEN, 2 : ODD
- If "FUNC" S/W is pushed when the desired Parity Bit is displayed, the selection is set and the
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next item is entered into.
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6.5.7. Maintenance Mode
■ When "RESET" and "TEST" S/W are pushed for more than 2 sec in the display state of gas concentration, the setting
function for Maintenance is entered into.
■ The display state of gas concentration is returned to only when "RESET" S/W is surely pushed in Maintenance mode
- Mode for selection of the function of outputting current input value and output value as the
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reference for Channel unit. "In" or "oUt" is displayed whenever "UP" S/W or "DOWN" S/W is pushed.
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If "FUNC" S/W is pushed when the desired mode is displayed, the relevant mode is entered into.
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When "In" has been selected, it is the mode for setting of current input value, while it is the mode
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for setting of current output value when "oUt" has been selected.
- When "RESET" S/W is pushed, the display state of gas concentration is returned to.
- Setting mode by inputting of mA current when "In" has been selected
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When "FUNC" S/W is pushed, the function of displaying current input value as figures is entered into.
- When "RESET" S/W is pushed, the display state of gas concentration is returned to.
- Mode where the value transformed in processor by inputting 4mA current in (mA) terminal is
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displayed as figures.
- If "FUNC" S/W is pushed when the displayed figure is stable and a current value within the
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normal range is inputted, SUC(Success) is displayed and the next item is entered into.
- When a current value outside the range is inputted, C-F (Calibration-Fail) is displayed.
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After checking the current inputted as the current value is displayed again, check by pushing
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"FUNC" S/W again.
- When "RESET" S/W is pushed, the display state of gas concentration is returned to.
- Setting mode by inputting of 20mA current.
- When "FUNC" S/W is pushed, the function of displaying the current input value as figures is
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entered into.
- When "RESET" S/W is pushed, the display state of gas concentration is returned to.
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6. How to operate
6. How to operate
