S7-200接收大于246个字节的数据吗？？
下面是协议转换器返回的数据，对我有用的是数据名称和数据，我能不读对我没用的那些字节吗？我该怎么写程序？

数据名称 数据 描述
.ctr_type LOCAL 000 000 Control Mode
.status.. OFF 000 000 Run Status
.CHIL_S_S 0 000 000 CCN Chiller Start/Stop
.HC_SEL.. 0 000 000 Heat/Cool Select
.RECL_SEL 0 000 000 Reclaim Select
.ALM..... NORMAL 000 000 Alarm State
.alarm_1. 0 000 000 Current Alarm 1
.alarm_2. 0 000 000 Current Alarm 2
.alarm_3. 0 000 000 Current Alarm 3
.alarm_4. 0 000 000 Current Alarm 4
.alarm_5. 0 000 000 Current Alarm 5
.CAP_T... 0 003 000 Percent Total Capacity
.DEM_LIM. 100 003 000 Active Demand Limit
.SET_NUM. 1 000 000 Active Setpoint Number
.sp...... 44.7 001 000 Current Setpoint
.CTRL_PNT 44.7 001 000 Control Point
.EWT..... 62.9 001 000 Exchanger Entering Water
.LWT..... 63.7 001 000 Exchanger Leaving Water
.mode1_8. 10000000 000 000 Actives Modes 1 to 8
.mode9_16 00000000 000 000 Actives Modes 9 to 16
.mod17_22 000000 000 000 Actives Modes 17 to 22
.EMSTOP.. 0 000 000 Emergency Stop
. 0 000 000 CIRCUIT A ANALOG VALUES
.CAP_A... 0 003 000 Percent Total Capacity
.DP_A.... 65.9 020 000 Discharge Pressure
.SP_A.... 64.5 020 000 Suction Pressure
.OP_A1... 71.5 020 000 Oil Pressure Cp1
.OP_A2... 78.6 020 000 Oil Pressure Cp2
.op_d_a1. 8.0 020 000 Oil Press Difference Cp1
.op_d_a2. 15.2 020 000 Oil Press Difference Cp2
.ECO_P_A1 63.5 020 000 Economizer Pressure Cp1
.ECO_P_A2 63.5 020 000 Economizer Pressure Cp2
.SCT_A... 66.1 001 000 Saturated Condensing Tmp
.SST_A... 65.1 001 000 Saturated Suction Temp
.DT_A.... 70.3 001 000 Discharge Temperature
.dsh_a... 4.2 006 000 Discharge Superheat
.CPA1_TMP 0.0 001 000 Motor Temperature, Cp1
.CPA2_TMP 0.0 001 000 Motor Temperature, Cp2
.EXV_A... 0.0 003 000 EXV Position
.hd_pos_a 0.0 003 000 Head Press Actuator Pos
.level_a. 0.4 000 000 Cooler Level Indicator
. 0 000 000 CIRCUIT A DISCRETE
.CP_A1... 0 000 000 Compressor 1 Output
.CPA1_MC1 0 000 000 Cp1 Mtr Cool Solenoid 1
.cpa1_mc2 0 000 000 Cp1 Mtr Cool Solenoid 2
.CPA1_OLS 0 000 000 Cp1, Oil Solenoid Out
.CP_A2... 0 000 000 Compressor 2 Output
.CPA2_MC1 0 000 000 Cp2 Mtr Cool Solenoid 1
.cpa2_mc2 0 000 000 Cp2 Mtr Cool Solenoid 2
.CPA2_OLS 0 000 000 Cp2, Oil Solenoid Out
.ldr_1_A. 0 000 000 Cir A, Loader 1 Output
.ldr_2_A. 0 000 000 Cir A, Loader 2 Output
.oil_h_a. 0 000 000 Cir A, Oil Heater Output
.oilpmp_a 0 000 000 Cir A, Oil Pump Output
.oil_l_a. 1 000 000 Cir A, Oil Level Input
.fan_a1.. 0 000 000 Fan Stage 1 Output
.fan_a2.. 0 000 000 Fan Stage 2 Output
.fan_a3.. 0 000 000 Fan Stage 3 Output
.fan_a4.. 0 000 000 Fan Stage 4 Output
. 0 000 000 CIRCUIT B ANALOG VALUES
.CAP_B... 0 003 000 Percent Total Capacity
.DP_B.... 60.2 020 000 Discharge Pressure
.SP_B.... 62.8 020 000 Suction Pressure
.OP_B1... 60.3 020 000 Oil Pressure Cp1
.OP_B2... 0.0 020 000 Oil Pressure Cp2
.op_d_b1. -2.2 020 000 Oil Press Difference Cp1
.op_d_b2. 0.0 020 000 Oil Press Difference Cp2
.ECO_P_B1 62.5 020 000 Economizer Pressure Cp1
.ECO_P_B2 62.5 020 000 Economizer Pressure Cp2
.SCT_B... 62.1 001 000 Saturated Condensing Tmp
.SST_B... 63.9 001 000 Saturated Suction Temp
.DT_B.... 70.9 001 000 Discharge Temperature
.dsh_b... 8.8 006 000 Discharge Superheat
.CPB1_TMP 0.0 001 000 Motor Temperature, Cp1
.CPB2_TMP 0.0 001 000 Motor Temperature, Cp2
.EXV_B... 0.0 003 000 EXV Position
.hd_pos_b 0.0 003 000 Head Press Actuator Pos
.level_b. 0.4 000 000 Cooler Level Indicator
. 0 000 000 CIRCUIT B DISCRETE
.CP_B1... 0 000 000 Compressor 1 Output
.CPB1_MC1 0 000 000 Cp1 Mtr Cool Solenoid 1
.cpb1_mc2 0 000 000 Cp1 Mtr Cool Solenoid 2
.CPB1_OLS 0 000 000 Cp1, Oil Solenoid Out
.CP_B2... 0 000 000 Compressor 2 Output